Computers threaten health.
Sitting for a long time will cause backache.
Sitting for a long time, the muscles have no chance to stretch and contract, and the nerves and blood vessels are compressed. Whether you sit crooked or straight, you will have backache for a long time, resulting in 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 methods:
1. The upper body should keep the neck upright and the head upright, so that the head can be supported. The shoulders droop naturally, the upper arms cling to the body and the elbows bend 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, frequent use of the mouse will make your fingers stiff.
Long-term use of computer keyboard and mouse may be associated with a disease called wrist joint syndrome, which leads to pain and numbness of index finger or middle finger, muscle weakness of thumb, which leads to nerve damage and muscle weakness of hand. The problem is that hitting the keyboard or moving the mouse repeatedly every day, the wrist joint is long-term, dense, repetitive and excessive, which leads to peripheral nerve injury or oppression, blocking 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.
Mitigation methods:
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.
When the monitor is too hot, there will be quite a lot of electromagnetic radiation when it works, which will ionize the air, constantly produce positive charges (positive ions), and 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 methods:
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. Women refer to the most talked about healthy drinks 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.