How to stay healthy while working at a computer? Personal experience: how I became less tired when working at a computer

Computer literacy

Are you worried about spending too much time on the Internet? Although the internet can be a good source necessary informationas well as providing an excellent opportunity for social interaction, many of us begin to emotionally and physically suffer from the side effects of excessive computer use. There are many different options you can take to curb your computer habits and spend more time away from the screen.

Steps

Identifying the sources of the problem

    Understand what you are at risk. Sitting in front of a computer screen for too long is not only wasted time. This can lead to physical and emotional burnout. Understand that excessive sitting at your computer can negatively affect you. Understanding the potential risk correctly will give you additional motivation to rethink your habits.

    Make a list of what you do on your computer. In order to understand where and how you spend too much time on your computer or laptop, track the sites you visit and analyze everything else you do on your computer. What sites are causing the problem? Calculate how much time you spend on the Internet.

    • Do you use the Internet primarily for social networking? Are you a Facebook, Twitter or Instagram user? Have you caught yourself thinking that you are mindlessly scrolling through the news feed? Try to figure out why you are so interested in social media and how you could reduce the time you spend on them.
    • Many people use the Internet to watch television, movies, and other videos. Do you spend a lot of time on Netflix and YouTube? Is watching videos the main activity of your vacation? Is there anything else you could do instead of relaxing and watching videos online?
    • Are you overly addicted to news? Do you read the New York Times, Huffington Post and other news websites to keep up with the rest of the world? If so, could you subscribe to a few magazines or read the newspaper instead of studying the news feeds solely with the help of a computer.
    • Do you play any games? Many people use their computer primarily for gaming, whether it be online battles with other players or single player games. How many hours do you spend playing computer games every evening / night?
    • Track how much time you spend on a computer during the week, make full list all the sites that you visit and all the tasks that you do on your computer. Try to figure out which sites, apps, or games are taking the most of your time.

  1. Analyze how much time you spend in front of a computer screen. Many people are very surprised after calculating how much time they spend sitting at the computer. Find out how many hours a day you spend in front of a computer screen. This may give you more motivation to cut back on your computer time.

    Changing the way you use the Internet

    1. Develop a schedule for using the Internet. When it comes to using a computer, you cannot completely abandon it. We are increasingly dependent on the Internet and email for work, social life, paying bills and shopping. Internet scheduling is the most viable option for resolving the issue. Just limit the amount of time you spend online without having to completely eradicate your habit.

      Use technology to your advantage. There are many applications and add-ons (add-ons) that can block your access to those websites that are taking a lot of your time. If self-control does not help you to reduce the time that you sit at the computer, then spend some effort to install such an application.

      Uninstall anything you don't need. If you sit at your computer for a long time due to games or some other applications, then think, maybe it's time to uninstall them.

      Make it harder for yourself to access. Sometimes the principle of “out of sight - out of mind” can effectively help to reduce the time spent at the computer. Difficulty accessing the internet or a laptop by itself can give you extra time to reflect on what you are doing, so you can come to the right decision and take a break from the computer.

      Take breaks. Even if we are careful about the time we spend at the computer, sometimes we still have to use the computer for work or study. If this is also true for you, then take breaks to minimize the physical and emotional side effects of working too long at the computer.

    Changing your lifestyle

    1. Find a hobby. Often the computer serves as the main form of recreation for a long time. If you've taken this route in terms of your recreational activities, then try to find some new hobbies for yourself that will help you combat your excessive internet surfing.

      • If you want to do something after work, do crossword puzzles, sudoku, board games and cards. If you live with a roommate, family, or someone else who matters a lot to you, then suggest a weekly game in the evenings.
      • Set yourself days without internet or days with limited internet use and use that time for other activities. Hiking can often help ease internet addiction. Try organizing weekend hikes or jogging after work.
    • Avoiding computer use altogether is not a viable option. This not only requires a lot more willpower than most people can boast, but, as a rule, at this age, many people need at least some kind of access to the Internet in order to work and develop professionally.
    • Find support. Talk to friends and family about your computer and internet problems. Ask them to help you participate in group activities that do not involve a computer.

For many years, the computer has been an integral part of the life of almost every person on the planet. At the same time, everyone knows that spending many hours every day at the computer causes serious harm to health. To avoid negative consequences, you should adhere to a few simple recommendations:

1. It should be comfortable to sit at the computer. For these purposes, it is worth buying a comfortable chair, otherwise the back will start to ache, and the posture will deteriorate. If back problems are already making themselves felt, it is advisable to buy a posture corrector at your nearest pharmacy and put it on every time before sitting at the computer.

2. It is better to choose a large table so that you can place not only a mouse, keyboard and monitor, but also additional equipment: a scanner, a modem, a printer, etc. on it.

3. The workplace must be periodically cleaned and dust and debris must not accumulate. In this case, it is advisable to wipe the mouse and keyboard with a disinfectant, since it is on their surface that bacteria and microbes accumulate no less than under the rim of the toilet bowl.

4. From constant mouse clicks the hand gets tired and numb, sometimes even articular disease develops, which is difficult to cure. Therefore, it is recommended to knead your hands for a few minutes every hour.

5. Good vision - this is a rarity, but even people with excellent eyesight should take care of their eyes, because they quickly get tired of working at a computer. To avoid vision problems, it is recommended to use a 15 ”medium monitor. Monitors that are too small or too large can tire the eyes. In addition, the distance between the eyes and the monitor should be at least 45 and no more than 60 cm.

6. Lighting in the room plays an important role. It is impossible to sit in the dark and work at a computer, as this also adversely affects vision. The best option is the same brightness of the monitor and the light in the room.

You should take care of your health before serious problems appear, since they are easier to prevent than to cure.


In principle, everyone knows that sitting at a computer for a long time is harmful.

In this article, we will try to understand this issue a little deeper.

Why is it harmful? Is it possible to make it not harmful?What is needed for this? And now, in order ...

1. Harmful to eyesight

Small text vibrations and screen flickering overload the eye muscles, and this leads to a gradual decrease in visual acuity.

When working with a PC, the frequency of blinking eyes is reduced by about three times, due to which there is a partial drying of the tear fluid film, which is the cause of the development of the so-called dry eye syndrome - this is the most common disease of people working at a computer. Fatigue, photophobia, stinging, feeling of a speck in the eye, accompanied by itching, burning, irritation and redness of the eyes are all symptoms of dry eye syndrome.

Drying of the tear film reduces visual acuity by about 0.5 diopters, therefore, for prevention, it is necessary to use special drops that restore the tear film and not be at the computer for more than 40 minutes in a row. In adults, due to overexertion of the eyes, accommodation spasm most often develops - false myopia, which is treated with a set of special exercises, and in children, “communication” with the monitor leads to true myopia, which progresses with age.

If you or your children are still using the old crt monitorsimilar to a TV, it makes sense to think about buying a more modern one. Rotate the monitor 90 degrees to the window (to avoid glare). You need to look at the monitor from arm's length, and its upper third should be at your eye level. Take breaks every hour. Do the simplest eye exercises: first look at a close object (for example, a pencil in your hand) for 15 seconds, then for 15 seconds at a distant one (for example, out a window).

2. Harmful to the spine

Working at the computer, you sit in one position for a long time. This leads to a constant load on some muscle groups and to a constant lack of it, on other muscle groups. Lack of load on the back muscles leads to their degradation, and since the metabolism in the spine occurs with their help, accordingly, it is also disturbed, as a result, degradation (destruction) of the intervertebral discs occurs - osteochondrosis.

It is also worth noting that in the sitting position the load on the intervertebral discs is much greater than in the standing or lying position. Thus, all these negative factors can cause the appearance of a herniated disc, and it can cause pain in the head, extremities and internal organs, depending on its location.

In childhood or adolescence, when the spine has not yet matured, constant presence at the computer can lead to curvature of the spine (scoliosis), but in the event that the child does not maintain the correct posture (as at school at a desk).

Organize as ergonomically as possible workplace... Change your position or get up from the table as often as possible. Do gymnastics, exercise, develop your back muscles.

3. Harmful to the hands

Tingling, numbness, trembling in the fingers, pain in the wrist of the right hand that controlled the mouse are not signs of overwork or the result of long work. These are all symptoms of the so-called carpal tunnel syndrome, which today occurs in most people working at a computer. Prolonged monotonous movements of the hands and fingers, as well as their incorrect position during work, lead to the constant occurrence of microtraumas of the neurovascular bundle and surrounding tissues, which causes compression of the nerve.

When working at a computer, the load is not on the entire arm, but on certain muscles, which at first hypertrophy, and then clamp the nerve. The nerve becomes trapped - blood circulation inside it deteriorates, which interferes with the normal conduction of nerve impulses and causes severe pain, swelling and numbness of the fingers.

In a person sitting in a chair, the legs should touch the floor and form an angle of 90 degrees with the body. The arms should be bent at the elbows and the joint angle should be approximately 90 degrees. In this case, the load on the muscles of different groups is evenly distributed.

The keyboard should be located at a height of 65-75 cm from the floor, while the user's arms should not be bent more than 80 degrees at the elbow joints, otherwise blood circulation in the muscles worsens, which leads to a rapid decrease in performance. According to TCO'99 recommendations, the keyboard should not be too high and with a steep rise. Distance from table surface to row A-E in standard layout cannot exceed 30 mm. The permissible angle of elevation of the keyboard in relation to the working surface of the table is from 2 to 15 degrees. It is this range of angle values \u200b\u200bwith correct posture that allows you to achieve the optimal position of the hands.

Continuous operation is unacceptable: due to eye strain and impairment of blood circulation in the hands. During breaks, which should last 5-7 minutes and be repeated every 40-50 minutes, it is necessary to perform a small set of exercises for the hands: clench and unclench fists - five to six times within 1-2 minutes, perform rotational movements of the hand in one and the other side for 1-2 minutes, then straighten your arms in front of you and move your fingers for 1-2 minutes. After that, the exercise can be repeated.

4. Harmful to general physical health

Sitting at the computer for a long time is harmful, because it is a lack of physical activity. The lack of motor activity of the muscles surrounding the bones leads to metabolic disorders in the bone tissue and a loss of their strength, hence poor posture, narrow shoulders, sunken chest and other, which adversely affects the health of internal organs. It also leads to loosening of the articular cartilage and changes in the surfaces of the articulating bones, to the appearance of pain, conditions are created for the formation of inflammatory processes in them.

A decrease in motor activity leads to a violation of the coordination in the work of the muscular apparatus and internal organs due to a decrease in the intensity of impulses from skeletal muscles to the central regulatory apparatus. At the level of intracellular metabolism, hypokinesia leads to a decrease in structures. With hypokinesia, the structure of skeletal muscles and myocardium changes. Immunological resistance, activity decreases.

Also, the body's resistance to overheating, cooling, and lack of oxygen decreases. Already after 7-8 days of motionless lying, people have functional disorders; apathy, forgetfulness, the inability to concentrate on serious activities appear, sleep is upset, muscle strength drops sharply, coordination is disturbed not only in complex, but also in simple movements; the contractility of skeletal muscles worsens, the physicochemical properties of muscle proteins change; the calcium content decreases in the bone tissue.

What can I say here? Movement is life. Remember this. In order not to turn into a flabby, weak, sick creature, it is enough to do ordinary gymnastics, which was taught at school. Although, if you decide to do push-ups, swing the press and pull up on the horizontal bar, then this will undoubtedly be a big plus to your well-being and self-esteem.

5. Harmful to the genitourinary system

When sitting on a chair for a long time, a thermal effect arises between the seat and the human body, which leads to stagnation of blood in the organs located in the pelvic region, which negatively affects the genitourinary system. Hemorrhoids are a common problem.

Get up from the table often.

6. Harmful to the psyche

This issue deserves separate consideration, and a full article will be devoted to it later. I'll try to describe it in a nutshell.

Whether we like it or not, a computer is something we can't imagine without modern world... Although he appeared in our life not so long ago. People use it to earn / spend money, get to know each other, become famous, kill time, etc. It is difficult to argue that it does not affect our psyche in any way. But how strongly does the computer affect our psyche? You can try to answer this question yourself. If you have:

· Good health or euphoria at the computer;

· Inability to stop;

· An increase in the amount of time spent at the computer;

• neglect of family and friends;

• feelings of emptiness, depression, irritation not at the computer;

• lying to employers or family members about their activities;

· Problems with work or study.

Dangerous signals are also: obsessive urge to constantly check email; anticipation of the next online session; increased time spent online; an increase in the amount of money spent online.

Depending on how many points suit you, the computer influences your psyche as much.

· Remember that a computer is just a device that is designed to help a person, not to enslave him.

Go out into the real world more often

· Do fasting days when you live without a computer, TV, etc. In fact, you can live like that too. Though not for long. But still, you need to rest from the computer - that's a fact. The main thing is to rest, and not to be on the street and think, faster to the computer - this is already a diagnosis.

· A phrase from the Internet: “The Internet, it does not bring people closer. This is a cluster of loneliness. We seem to be together, but each one is one. The illusion of communication, the illusion of friendship, the illusion of life ... "

conclusions

Conclusion: we cannot do without a computer, but if we sit near it for a long time, we will have health problems. To avoid them, you need to take breaks at least every 50 minutes, do gymnastics for the eyes and just gymnastics for the body, get up from the table more often, monitor your physical and mental health.

The computer in the life of a modern person is one of the main sources of information, a means of entertainment and recreation, as well as the ability to communicate and even make money. But, spending many hours at the computer every day, we rarely think about the harm caused to our body. Sedentary image life over time leads to negative health effects. But the list of dangers of "freezing" for many hours at the computer is much wider.

Experts say that the time spent in "communication" with equipment, exceeding the mark of 7-8 hours, slowly but surely harms the body. In the first weeks and even months, we may not notice this, however, over the years the picture of "sad consequences" will become brighter and brighter. What is the danger of prolonged "sitting" at the computer for our health? Let's take a look at five main reasons why it's worth making adjustments to your daily routine.

Low contrast or brightness of the monitor, the lack of clear image boundaries, constantly flickering pictures and glare - this and much more creates a special strain on the vision. The human eye is not designed to work with a computer for a long time, and as a confirmation of this, the first 45 minutes of continuous monitoring of the monitor cause visual fatigue. It is noteworthy that the most negative influence the eye health is affected not by reading from the screen, but by entering information and, in particular, working with computer graphics.

Back in 1998, American scientists identified the concept of Computer Visual Syndrome (CVS). This term means not only visual impairment, but also the appearance of unpleasant sensations (tingling, excessive dryness, burning, etc.). Manifestations of CVS are:

  • a gradual decrease in vision, the severity of which depends on the time spent at the computer;
  • bifurcation of the visual image and eye fatigue too quickly;
  • violation of accommodation, in which a person cannot quickly focus his gaze from close objects to distant ones.

To avoid such consequences, it is necessary to choose monitors with a frequency of 100 Hz or more for operation. You should also take breaks from work every 45 minutes. During breaks, experts recommend doing simple eye exercises, such as rotating clockwise and back again for 20 seconds.

Computer work and spine

For the full functioning of the musculoskeletal system, our body needs constant movement. Sitting at the computer, we are in the same position for a long time, which negatively affects not only the muscles, but also the spine. The habit of sitting with a bent back has a detrimental effect on the intervertebral discs, causing postural disorders and the appearance of scoliosis. People who spend most of the day in a sitting position quite often suffer from osteochondrosis.

If you experience pain in the lumbar region, neck, shoulders, as well as frequent headaches, you should consult a doctor. But to prevent such consequences, experts recommend:

  • take breaks from work, at least 10 minutes out of the working hour, devoting to movement (light gymnastics or simple walking);
  • while working, take the correct position with legs bent at an angle of 90 ° and a straight back;
  • choose a comfortable chair that allows you to reduce stress on the spine during prolonged sitting.

Note that regardless of whether you play sports in your free time, doing an hourly warm-up while sitting at the computer is a must.

Lack of sufficient physical activity always threatens us with extra pounds. Working at a computer, we do not waste the amount of energy consumed with the required efficiency. Because of this, excess fat deposits begin to form, which negatively affect work. different systems organism.

Extra pounds put additional stress on the heart, pancreas and musculoskeletal system. So, over time, against the background of obesity, heart failure, arterial hypertension or diabetes mellitus may develop, the foot may deform or the load on the spine may increase. Regular exercise, walking in free time from work (you need to walk at least 3 km a day), proper nutrition and hourly breaks for warm-up will help prevent excess weight during daily long-term work at the computer.

Computer work and cardiovascular system

Staying in a stationary position regularly for 7-8 hours increases the stress on the heart. The vital organ also loses its stamina with sudden physical activity, which results in its overstrain. From here, over time, a person can develop tachycardia, which is a considerable danger to health and even life.

A sitting position disrupts blood circulation in the veins of the lower extremities and in the pelvic organs. Inadequate blood flow in the lower extremities gradually weakens the walls of blood vessels and leads to varicose veins, and congestion in the pelvic organs causes an increase in hemorrhoids and, accordingly, provokes the development of hemorrhoids. Doing a warm-up during work (every 45 minutes) and maintaining a healthy lifestyle will help to avoid these consequences. Excessive stress on the cardiovascular system can be complemented by smoking, alcohol consumption and other bad habits.

For people who work a lot at the computer, carpal tunnel syndrome is one of the most common negative consequences of "communication" with technology. Compression of the median nerve located in the carpal tunnel occurs due to prolonged performance of monotonous movements of the hands. The symptoms of carpal tunnel syndrome are:

  • the appearance of burning and tingling in the hands;
  • painful sensations extending not only to the hand, but also to the forearm;
  • decreased gripping function of the hand;
  • increased sweating and dry skin on the hands;
  • circulatory disorders that worsen skin color and condition of nails.

You can protect yourself from the appearance of carpal tunnel syndrome by arranging a comfortable workplace. Hands should be free to rest on the table, and movements when using the mouse or typing on the keyboard should be smooth. A regular warm-up for the hands will also be useful.

How to minimize harm from working at a computer?

We do not always have the opportunity to spend less time at the computer. In such situations, a few simple tips will help you:

  • competently approach the arrangement of your workplace, which allows you to keep your legs, arms and back in the correct position;
  • take a break from work every 45 minutes by doing a little workout for the body and eyes;
  • maintain an optimal distance between the monitor and your eyes (recommended at least 70 cm);
  • adjust the contrast and brightness of the monitor to match the lighting in the room where you are working.

Try to reduce the time spent at the computer. Replace playing games and watching movies with walks and fitness activities. So you can provide the necessary load on all body systems and maintain your health and well-being.

Update: October 2018

Global computerization is an undeniable technical progress. Elderly people and even two-year-olds are also able to work on a computer, which their parents are incredibly proud of. Both children and adolescents are ready to spend around the clock at an alluring monitor.

At the same time, few people think about where children's tantrums suddenly come from, why adolescents suffer from headaches, and where healthy children who are not burdened with problems arise.

It is completely impossible to give up a computer, since in the modern technogenic world, the PC has become an indispensable element of life. But like any technical gadget, the computer must be used wisely, strictly adhering to the times, conditions and breaks in work.

The harm to health caused by a computer is sometimes exaggerated. The negative impact is created due to the irregular operating time for the PC, i.e. the person himself exacerbates the existing risks.

Electromagnetic radiation

Any household appliance emits EMP, but a person does not sleep next to a refrigerator or a working microwave oven, does not watch TV at a distance of 25-40 cm from the eyes, but when working at a PC, all emitters are concentrated near the body: monitor, operating unit, mouse, keyboard.

An independent study of computers common on the market for this product, which was carried out by employees of the Center for EM Safety (Moscow), made it possible to draw a disappointing conclusion about the excess of the biologically hazardous level of EMR in the user's area.

PCs increase the overall EM background generated by household appliances and "irradiate" not only the one sitting at the screen, but also those around them. An area within a radius of 1.5 m from the computer is considered dangerous.

An increased EMR background causes:

  • headache
  • tiredness, nervousness
  • decreased resistance to infections, from the skin to internal organs
  • in the growth of the number of malignant neoplasms, the increased EM background also makes an undeniable contribution.

PC monitors made on cathode ray tubes

They are proven sources of ultraviolet, soft X-ray, visible, infrared, radiofrequency, super- and low-frequency EMP. Most of all EMP is emitted by the back and side walls of the monitor. Every year more stringent standards are adopted regarding the radiation power of the monitor, while manufacturers take a cunning step, not reducing this same power, but improving the quality of the protective coating applied to the front of the screen. The back and side walls still emit EMP.

System unit

The system unit is also a powerful emitter. The human body is most sensitive to EMR in the 40-70 GHz range. At these frequencies, the wavelength is commensurate with the size of cells, which means that the radiation easily penetrates the tissues. The peculiarity of modern PCs:

  • this is an increase in the operating frequencies of both the processor and peripheral devices
  • power increase up to 400 - 500 watts.

As a result, the radiation level of the block in the frequency range 40-70 GHz has increased thousands of times over the past 2-3 years.

Laptop and LCD monitors

LCD monitors and laptops made on the basis of liquid crystals are positioned as safe, since they do not generate that “bouquet” of EMP, which is typical for cathode-ray tubes. But not only the tube is the emitter - the supply voltage converter is capable of generating harmful fields when the device is operating from the network, and the control circuit, and other elements of the equipment.

At the same time, the laptop is always located closer to the user, and some users have the habit of placing the PC on their lap.

Research: Test centers "CYCLONE-TEST" and "ELITA" investigated 5 types of notebooks from the most famous manufacturers. EMP measurement was carried out in 8 directions from the equipment, including the keyboard, since it is monolithically connected to the laptop. In this case, the measurement distances from the PC were taken to be smaller than those specified by the MPR II standard.

Studies have shown that when the device was powered both from the mains and from the battery, the MPR II standards were not met in most samples in all 8 directions. Especially significant excess was observed in front and to the right of the PC.

Effect of EMR on children and pregnant women

The brain substance in children is characterized by higher conductivity, and the bones of the skull are thinner, which leads to a higher specific absorbed power in the end. EMP penetrates deeper into the parts of the brain.

EMF is a biologically active factor in relation to embryos. As you know, the sensitivity of an embryo to any damaging factors is several times higher than that of an adult, and EMR is no exception. In utero damage when working at a computer most often occurs in the early stages of development, resulting in miscarriages or malformations.

Vision

Modern monitors are already devoid of the previously typical problem - flickering, but this does not mean that the computer does not exert stress on the eyes, which, if the standard operating time on a PC is observed, is comparable to that when watching TV.

  • Stress - the uncontrolled use of a computer by children, whose health in rare cases is absolute, leads to a strain of the visual apparatus, which is equated to severe stress. Everyone knows about the consequences of stress, this is a separate topic.
  • Decreased vision - weakness of the muscular apparatus of the eyes with overexertion leads to a drop in vision. Carried away by the picture on the monitor, children forget to blink, which leads to dry cornea and deterioration of vision.

4 factors affect the final eye strain:

  • monitor quality;
  • work intensity;
  • duration of work;
  • organization of the workplace.

The screen image a priori differs from the natural one. Unlike natural reflected light, it is self-luminous and has little contrast, which is further diminished by external light. The image from the monitor consists of separate dots, constantly flickering. There are no clear boundaries, like a picture on paper, a computer image.

The increase in visual load is accompanied by the need to constantly move the gaze from the screen to the paper text or keyboard. The situation is aggravated by poor-quality software, incongruous color selection, unreadable font, poor positioning of the monitor, poorly organized workplace (glare from the screen, non-compliance with the distance to the screen, etc.).

All this leads to the development of the so-called computer visual syndrome:

  • eyes start to water
  • the image becomes fuzzy, double
  • fatigue occurs
  • concentration change.

Examination of people who work at a computer for a long time led to the identification of the following symptoms:

  • redness of the eyes in 48%;
  • itching of the ocular region in 41%;
  • pain in the eyes in 9%;
  • Flies in the eyes of 36%;
  • discomfort in 5-10%;
  • headache in 9%;
  • weakness in 3%;
  • darkening and double vision in 2 - 0.16%;

In addition to subjective sensations, physiological changes in the visual system were also observed in this group of people:

  • violation of convergence in 52% of cases, accommodation - in 45% of users;
  • changes in binocular vision in 49%, stereo vision - in 47%;
  • decreased visual acuity in 34%.

Sitting position

  • Prolonged sitting at the computer in a virtually forced position turns into stagnation of blood in the pelvic area, which contributes to development.
  • The load on the musculoskeletal system leads to poor posture and scoliosis in childhood, as well as the deposition of salts and osteochondrosis in adults.
  • Physical inactivity leads to muscle weakness and obesity. A sedentary lifestyle of a person leads to already 35-40 years of age, which is threatened by heart attacks and strokes.

As for children, the problem is more than serious. Parents who are faced with problematic posture in their children know that it is very difficult to stop the progression and cure the incipient curvature of the spine. The computer completely captures children's attention, the child does not feel that he is sitting hunched over. The pathological process starts very quickly in a growing child's body:

  • at first there is a barely noticeable stoop
  • it is more difficult for a child to keep his back straight
  • when sitting, the back becomes round
  • then muscle weakness and improper posture lead to curvature of the spinal column, which can progress literally before our eyes.

Load on the joints of the hands

Many people notice that after long-term work on the computer (with a keyboard or mouse), the brush begins to grow numb, especially in the area of \u200b\u200bthe fingertips, and also aches. I want to rub my hands all the time, as if they are numb. All this is a consequence of disruption of the small joints of the hand, blood supply and innervation.

Exposure to dust, dirt and chemicals

When working, the PC attracts dust and various dirt that accumulates in the system unit, settles on the keyboard and mouse. The PC cooling system circulates dust indoors.

  • It has been proven that the keyboard contains many times more germs than the toilet lid.
  • Dust, being an active allergen, leads to the development of hypersensitivity reactions, and. In turn, pathogenic microorganisms enter the body with dirty hands and cause various obvious or latent infections.

Swedish environmentalists have found that within two years after manufacture, the monitor releases a chemical compound called triphenyl phosphate into the air, which is a potent allergen. This substance is part of the plastic, and when it heats up during the operation of the PC, it begins to release into the air. Triphenyl phosphate levels are ten times higher than background levels when working on a PC.

Effect on the nervous system and psyche

This factor is the most dangerous and in some cases leads to irreversible consequences and the formation of complete mental dependence on the computer.

Impact on children

The unstable psyche of children and adolescents suffers from being pulled over by the computer. Problems begin with a simple reluctance to leave the computer to do the usual things (walking, eating). The child then refuses to go to bed at the right time.

In the future, deprivation of the computer leads to irritability and tantrums. There is a violation of attention and memory, depressive and even aggressive mood.

The taste for life and mood only return when playing on PC. At the same time, the surrounding and what is happening the child is not interested, the appeal to him during computer games causes aggression or goes unnoticed. In a literal sense, addicted children find themselves in the computer world, becoming zombies and not interested in real life.

Impact on adults

Adult users often run away from their problems, plunging into the virtual world and being the winner of life there. At the same time, the events of the game are perceived as reality, with experiences and emotions. The adrenaline produced during the game is not destroyed by the body, as happens when playing sports, cycling, etc. When it gets hot in the body, adrenaline leads to the destruction of the nervous system, the development of neurasthenia and psychosis.

And for those who already have mental problems, the computer is absolutely contraindicated. Having tasted the taste of murder while playing, such people easily decide on this act in real lifeincluding suicide. The well-known case of suicide of 6 Russian schoolchildren - fans of "Final Fantasy", which occurred in 2001, is far from the only one, sad statistics are constantly replenished with ridiculous deaths of people dependent on computers.

Computer addiction in its power is equal to alcohol or drug addiction! But if in the case of the last two, different methods struggle, starting at the state level, the gamers are left on the sidelines, destroying their lives and the fate of their loved ones.

Is radiation from a Wi-Fi router harmful?

Wireless access point in global network probably in every apartment. It's convenient and economical, and those who have switched to Wi-Fi are unlikely to return to wired internet.

  • The radiation frequency of the router is 2.4 GHz (slightly higher for a microwave oven).
  • The radiation power is 18 mW (for a mobile phone, about 1 W.
  • If the device is turned on constantly, accordingly, the impact on the person will also be permanent. Some people do not turn off the access point even at night, they sleep in the room where the router is located, which is completely unacceptable.
  • An excess of radio waves threatens the development of irritability, fatigue and other symptoms.

Working at a fairly high frequency, the router has low power. Those. Reasonable use of the device, located at a safe distance, outside sleeping quarters, is considered acceptable and comparable to the effect of a TV, refrigerator and other EMP emitters. The closer the cure generator (in our case, the router) is to the person, the longer it works in continuous mode, the more negative impact it has.

At public points wi-Fi access Free source is far away from users with no health impact. In this case, the device that provides Internet access (phone, tablet) emits more.

Rules for working on a personal computer

All of the above problems can be avoided by strictly following the rules for working on a PC ourselves and not giving concessions to children, allowing them to play "well, another 5 minutes."

PC time - how long can you sit at the computer

For adult users, the total time of work on a PC is 6 hours a day (maximum you can sit at a computer for 8 hours due to professional necessity). This does not mean that you can sit on a computer at 9 am and stay out of the way until 3 pm. Breaks must be respected, which we will discuss below.

  • Teenagers 12-16 years old can spend no more than 2 hours on a PC per day;
  • Children 7-10 years old-12 years old are allowed 1 hour of work on a PC;
  • A child 5-7 years old can sit at the computer for no more than half an hour.
  • For babies under 5 years old, the PC should be prohibited.

Regulated breaks

In order not to develop overload of organs and systems, as well as mental discomfort, it is necessary to interrupt for active rest. Those. simply turning away from the monitor and staring out the window is not an option.

  • During each working hour, after 15-20 minutes, you should take your eyes off the screen for 2-3 minutes, or at least close them, doing a mini-unloading of the visual analyzer.
  • After every 45 minutes of working on a PC, you need to take a 10-15 minute break: warm up, walk. If possible, you can lie down with your eyes closed.
  • After 3 hours of work, you need to break off for a half-hour rest - go for a walk, breathe fresh air, have a snack.
  • It is useful to do gymnastics for the eyes - rotation of the eyeballs, frequent blinking, shifting the gaze from the near to distant objects.

Organization of the workplace - how to sit at the computer correctly

To work on a PC, there must be appropriate furniture - a computer table and a chair. Available in both adult and children's furniture, which can be adjusted according to height. In this case, the height of the chair should correspond to the height of the table.

  • The lighting should be even, there should be no contrasting light sources near the monitor.
  • The best placement for a monitor is a corner of the room, which allows the walls to absorb the EMP it generates. The distance to the monitor should be from 40-50 cm, while it should occupy a position a few cm below the eyes so that the gaze at the monitor is from top to bottom, and not vice versa. The refresh rate of the monitor screen must be at least 85 Hz.
  • The system unit should be located as far as possible from a person.

For work on a PC, special protective glasses are sold, which in no way affect the quality of the picture, but protect the eyes from overvoltage.

Caring for your computer

Remove the back cover at least once a month system unit and carefully vacuum the parts. The keyboard and monitor should be cleaned with a special cleaner every day.

To unused computer did not generate harmful radiation, you should turn it off from the network. This rule also applies to wireless routers or wired internet - they must be disabled.

Indoor microclimate

During breaks in work, through ventilation of the room should be done, and during work, the window should be micro-ventilated. PC operation leads to an increase in the level of positively charged ions and a decrease in negatively charged ions.

Fifteen-minute airing brings this indicator back to normal. During ventilation, other chemicals that enter the air due to the operation of the PC also leave the room.

How to save a child from computer addiction or prevent it from forming

  • It is difficult to completely eliminate the computer for a student, but health should always be a priority! The PC must be used strictly for homework and under adult supervision. If you give up the slack and allow you to play the game after completing your homework on a PC, you can forget about the further productive implementation of the lessons. Tasks that involve a PC should be completed last.
  • A computer should never be positioned as a bonus for something. You cannot turn a computer into a super-forbidden one (it is always more attractive), just as you cannot make a PC into a cult and an incentive prize for obedience. A child should understand that a computer is a gadget for adults.
  • Try to take all the child's free time with benefit: let it be sports sections, clubs, swimming pool, dancing, gymnastics, hockey and others. By giving energy to a useful pastime, there will simply not be enough time for a computer.
  • Do not set a bad example by passionately battling space monsters in front of children. Let the computer be associated with work necessities, not entertainment.
  • Spend time with children, excluding moments when the child is sitting at the computer and is left to himself, without distracting adults from their daily activities. Games should be in a child's life, because they develop, but let it be active street or exciting board games that are so much fun to play with the whole family.
  • Do not start acquaintance of children with the computer world immediately from an adult PC or laptop, if the child wants a computer, buy him a toy developmental device similar in appearance with a laptop.

The computer and human health are contradictory concepts, but with a reasonable organization of work on a PC, you can minimize the harmful effect of the device on health to the maximum.

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