Attention, computer people, beware of computer diseases! Sitting for a long time will lead to backache, so that muscles have no chance to stretch and compress nerves and blood vessels. No matter whether you sit crooked or straight, you will have backache for a long time, causing repetitive mechanical sports injuries. Many people are used to sitting in front of the computer for a long time to work or play. Medical experts warn that excessive use of computers will have a negative impact on people's health. Mitigation method: 1. The upper body should keep the neck upright, which can support the head, the shoulders droop naturally, the upper arm is close to the body, and the elbow is bent 90 degrees. Operate the keyboard or mouse to keep the wrist as horizontal as possible. 2. You must choose a desk and chair with ergonomic design and use a special computer chair. Sitting on it should follow the "three right angles": the first right angle is formed under the computer desk, the thigh and backup are the second instructions, and the arm forms the third right angle at the elbow joint. Lean your shoulder blades against the back of the chair, put your shoulders down and keep your chin away from your neck. Look straight at the center of the computer screen, preferably with a supported chair back and armrest, and the height can be adjusted. 3. The height of the computer should be appropriate. Install the center of the computer screen on the same horizontal line as the operator's chest. 4. When using the computer, you should rest for 5- 10 minutes every hour and do soft exercise or local massage. Second, you often use the mouse. If you use the computer keyboard and mouse for a long time, it may be related to a disease called wrist syndrome, which causes pain and numbness in the index finger or middle finger and muscle weakness in the thumb. If it develops, it may lead to nerve damage, which in turn will cause hand muscles to be cumbersome. The problem is that hitting the keyboard or moving the mouse repeatedly every day, the wrist joint moves for a long time, intensively, repeatedly and excessively, which leads to peripheral nerve injury or compression, which hinders nerve conduction, thus causing sensory and motor disorders in the palm. In addition, the elbow is often lower than the wrist, and when the hand is held high, the nerves and tendons are often oppressed, the hand begins to numb, the fingers lose flexibility, and joint pain often occurs. Frequent exertion of fingers will also damage the nerves and muscles of the hands and related parts due to excessive fatigue, resulting in ischemia, hypoxia and numbness. Relief method: 1. Try to avoid the upper limbs being in a fixed, mechanical and frequent working state for a long time. When using the mouse or typing, you should get up and move your limbs every hour of work, and do some actions such as clenching fists and pinching fingers to relax your fingers. 2. When using the computer, the height of the keyboard and mouse on the computer desk should be lower than the height of the elbow when sitting, which is beneficial to reducing the damage to the tendon sheath of the wrist when operating the computer. 3. When using the mouse, don't suspend your arm to reduce the pressure on your wrist. When moving the mouse, don't use wrist strength, but try to rely on arm strength to reduce wrist gifts. Don't knock the keys of the keyboard and mouse too hard, and relax the force moderately. It is best to choose a mouse with large radian and wide contact surface, which is helpful for indoor dispersion. 4. When using the mouse, use the "mouse wrist pad" to pad your wrist. Exposure to electromagnetic radiation for more than three times will lead to insomnia. The heat of the display is too high, and there will be quite a lot of electromagnetic radiation when it works, which will ionize the air and constantly produce positive charges (positive ions), which will constantly neutralize the negative ions in the air, resulting in almost zero negative ion content. The more beneficial negative ions, the more harmful positive ions. Being in an environment with too many positive ions for a long time, it enters the lungs through breathing, and then it is transported to various tissues of the human body with blood circulation, which makes people's blood and body fluids acidic, delays the normal metabolic function of the body, and accumulates toxins in the body, causing insomnia, decreased immunity and female endocrine disorders. Mitigation method: 1. Washing your face frequently can prevent the skin from being stimulated by radiation waves. Clean the office environment carefully. Because positive ions are firmly adsorbed on dust particles, the more dust there is, the more positive ions there are, and the greater the impact of computer radiation on human body. 2. Drink more tea. Tea polyphenols and other active substances contained in tea help to absorb radioactive substances. 3. Most of the radiation emitted by the display does not come from its front, but from its sides and back. Therefore, don't point the back of the monitor at the back of your head or the side of your body. 4. Drink green tea often. Green tea is the most talked about healthy drink in recent years. Because it contains powerful antioxidants catechol and vitamin C, it can not only eliminate free radicals in the body, but also make the accessory renal cortex secrete hormones against stress, which greatly improves the mood. But it is best to drink it during the day, which will affect sleep. Placing a pot of plants or water under the computer desk can effectively absorb the electromagnetic waves released by the computer and reduce the adverse effects on human health. Do you have computer occupational diseases? With the popularity of the Internet and computers, more and more people use computers, and some people need to stay with computers for a long time because of their work. The incidence of computer occupational diseases is particularly prominent among these white-collar workers, so how to prevent it? The main cause of computer occupational diseases is 1. Employees ignore correct posture when using computers; 2. The design of the office is not good, for example, the keyboard is too high or too low, and the mouse is in the wrong position; -3. Working too long, lack of rest, and being too tired. The location and symptoms of the disease were 1. Neck, waist and back neck often make noise, which is easy to "stiff neck". I feel a lump and tenderness. There is a tingling sensation locally. In severe cases, there will be nerve compression such as headache, blurred vision, decreased attention, paralysis and pain of upper limbs. 2. Tenosynovitis Long-term use of the keyboard or moving the mouse, fingers constantly sliding or typing on the keyboard, leading to repeated actions and friction for a long time, causing tendon sheath thickening and inflammation. This is tenosynovitis. The finger disc is compressed by the thickened tendon sheath, which causes severe pain and local swelling during activity. 3. The design of carpal tunnel syndrome keyboard often allows users to lift their wrists before use, but this will narrow the carpal tunnel. If it lasts for a long time, the flexor tendon of the hand keeps sliding in the carpal tunnel, which will easily cause carpal tunnel syndrome, compress the nerve lines and blood vessels of the hand, and lead to paralysis of the hand and even muscle atrophy. 4. Most civil servants in the lower limbs are sitting and working, but if they sit for too long and the space under the table is too narrow, it is difficult to straighten their legs, resulting in blood circulation in the lower limbs and easy paralysis of their feet. However, long-term overlapping of feet will lead to fatigue and strain of intervertebral disc ligament. Protective measures. Improve the working environment 1. It is best to choose a chair with backrest, oil pressure and roller design in the back health office. This chair has a backrest. If the seat is too deep, a back pad can be added to support the back, so that the back can maintain normal curvature and reduce the pressure on the spine and muscles. The chair has an oil pressure design, which can adjust the height of the seat so that the feet can lie flat on the ground. The chair has a roller design, which can adjust the twisting angle of the body when sitting and reduce waist strain. 2. The mouse, keyboard and mouse height should be moderate, and the keyboard height should be about 80 ~ 100 degrees. The height of the mouse should be the same as that of the keyboard. For right-handed people, the mouse should be placed on the right side of the keyboard. Using keyboard and mouse for a long time is easy to induce tenosynovitis. At this time, you can add a wrist pad in front of the keyboard or use a towel to make a wrist pad, which can support the wrist and reduce the height of the wrist. The mouse position can also be padded with towels. 3. The screen of the computer screen should be adjusted to tilt upwards 15 degrees. When sitting, the first line of words on the screen will form a horizontal angle with the eyes. Don't face the window on the screen, at least make a 90-degree angle with the window to reduce the refraction of sunlight. A filter is added to the screen to reduce radiation and static electricity. In order to balance the line of sight with the screen and avoid frequent drooping of the head and repetitive movements of the neck, you can add a folder, but pay attention to the fact that the folder should be able to change its position at will to avoid muscle fatigue caused by twisting the head to one side for a long time. Second, insist on doing health care campaigns. The following health exercises are done once a day in the morning and afternoon, 1 ~ 2 times in the morning and afternoon. 1, neck relaxation exercise people sit down, look forward, head forward, head to the left and right, big but slow, stop for 4 seconds, repeat 8 ~ 10 times. Look up at the ceiling, then chin down, close to the heart, hold for 4 seconds, repeat 8 ~ 10 times. 2. Put your hands on the back of the chair or on both sides of the chair. After the upper body is upright, do the upper body backward movement 10 ~ 15 times, so that the waist is not easy to tighten. 3. Sit with your knees bent and your feet flat. Take turns to tuck your knees around. Stop for 4 seconds and do 10 ~ 15 times on each foot. 4, foot movement, can make people with blood circulation in the foot muscles sit down, put their feet flat, lift both ankles with tiptoe, pause for 4 seconds, and then put them down; Then, with the support of the pedal, do the tiptoe upward movement, pause for 4 seconds and repeat 10 ~ 15 times. 5. Wrist movements are divided into left and right hands. Pull back the finger and wrist of the right hand with the left hand, then slowly straighten the elbow until the front end of the wrist feels tight, hold for 4 seconds, and do 8 ~ 10 times for each hand.