Harmful, surfing the Internet for a long time is due to the radiation of the computer to the human body. Count 1: Symptoms of electromagnetic radiation: insomnia, endocrine disorders: When the monitor is too hot, there will be quite a lot of electromagnetic radiation at work, which will ionize the air, constantly generate positive charges (positive ions), and constantly neutralize with 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. Causes insomnia, decreased immunity, and female endocrine disorders. Relief method: 1. Clean the office environment carefully. Because positive ions will be firmly adsorbed on dust particles, the more dust, the more positive ions. 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. So, don't point the back of the monitor at the back of your colleague's head or the side of your body. 4. Drink green tea often. Green tea is the most talked about health drink in recent years, because it contains powerful antioxidants catechol and vitamin C, which can not only eliminate free radicals in the body, but also make the accessory renal cortex secrete hormones against stress, greatly improving the mood. But it is best to drink it during the day, so as not to affect sleep. 5. Mung beans can clear away heat and detoxify, induce diuresis and reduce swelling, and coix seed can strengthen the spleen and stop diarrhea, and lighten the body and replenish qi. Often need to work late or when fidgety, dry mouth, constipation, it is very helpful to eliminate fidgety. 6. Washing your face frequently can prevent the skin from being stimulated by radiation waves. 7. Put a pot of plants or water under the computer desk to absorb the electromagnetic waves emitted by the computer. 8. Try to use LCD monitors. 9. Wear a radiation-proof Chinese-style chest covering. Inventory 2: Symptoms of dust field: Causes of skin allergy: When the monitor is turned on, an electrostatic field will be formed around it, which will almost suck the dust suspended in the air of the whole room into its own field, thus stimulating facial skin and causing allergic skin rash. Sitting in front of the computer, your surroundings are full of air containing a lot of dust particles, so the user's skin is very prone to allergic phenomena such as rash. Relief method: 1. Don't put mountains of papers and documents around the computer, but put all the necessary documents in the cupboard in different categories, because the dust on papers and documents is usually difficult to clean up. 2. Wipe the surface of the computer desk with a wet cloth dipped in antistatic agent. 3. Always open the window for ventilation. 4. Rub some moisturizing cream on your face before using the computer, or soak the towel with chamomile extract (a simpler method is to use a wet chamomile tea bag) and apply it directly to your forehead and cheeks. 5. Put a cactus on the computer desk, because the acupuncture of cactus can absorb dust. 6. Clean the keyboard frequently. Wash your hands when and after using the keyboard and before eating. Cover the keyboard with a cloth when not in use. Because the keyboard is uneven, it is very easy to accumulate dust, which will become a hiding place for skin diseases and cold germs. Count three: the picture flashes and heats up, causing the environment to be dry. Cause of dry eye: Although it is invisible to the naked eye, in fact, the picture on the display has been flashing. When looking at the monitor, we often stare at a certain point for a long time and rarely blink, so the eye muscles are easy to get tired, the eye mucosa is dry, and the eyes are red, swollen and painful. Almost everyone's eyes will feel sore and trachoma after working in front of the computer for 4 hours without interruption. The working environment of computer workers is closed, the humidity in the environment is low, and the computer keeps heating up. In a dry environment, the tear layer will evaporate in a few seconds, which has become an important cause of dry eye. Relief method: 1. It needs to be more than 70cm away from the display, slightly below the line of sight of both eyes, and try to reduce the area of the eyeball exposed to the air. 2. Adjust the brightness to a level that won't make your eyes tired. When working in front of the computer, the room should not be too dark or too bright. The ideal office environment is that the brightness of the room is the same as that of the screen. 4. Because you want to avoid the images of your face, lights and objects on the screen (all light and shadow will double the fatigue of your eyes), you should avoid the direct illumination of indoor light on the screen to produce interference light. The light source should preferably come from the left or right side of the computer user. If you wear glasses, you should buy yourself a pair of lenses with anti-reflective coating. In order to prevent conjunctival dryness, we should drop some eye drops with the same composition as our tears when using the computer. 6. When eyes are tired, apply a wet towel boiled with light black tea for a few minutes, which will quickly eliminate congestion and fatigue. 7. Stir-fry 500 grams of black beans, cool and grind into powder. 500 grams of walnut kernel, slightly fried, stripped, cooled and mashed into mud. Take the above two foods 1 spoon, pour them into 1 cup of boiled milk, add 1 spoon of honey, and take them in the morning or after breakfast. It can strengthen the muscle strength in the eye, strengthen the regulation function and improve the symptoms of eye fatigue. Count 4: Symptoms of long-term mouse use: Mouse hand (wrist joint syndrome) Reason: Long-term use of computer keyboard and mouse may be associated with a disease called wrist joint syndrome, resulting in pain and numbness of index finger or middle finger, muscle weakness of thumb, which may lead to nerve damage, and then hand muscle atrophy. The problem is that knocking on the keyboard or moving the mouse repeatedly every day leads to long-term, intensive, repetitive and excessive activity of the wrist joint, which leads to injury or oppression of peripheral nerves and blocks nerve conduction, thus causing sensory and motor disorders of the palm. In addition, the elbow is often lower than the wrist, the hand is held high, the nerve and tendon are often compressed, the hand will start to numb, the fingers will lose flexibility, and joint pain often occurs. Frequent exertion of fingers will also damage the nerves and muscles of hands and related parts due to excessive fatigue, resulting in a series of symptoms such as ischemia, hypoxia and numbness. The survey shows that women have more "mouse hands" than men, because women's wrists are usually smaller than men's, and the median nerve of the wrist is easily oppressed. 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 force but try to rely on arm force to reduce the stress on the wrist. 4. Don't push the buttons of the keyboard and mouse too hard, and it is better to be relaxed and moderate. 5. It is best to choose a mouse with large radian and wide contact surface, which is helpful for dispersion. 6. When using the mouse, use the "mouse wrist pad" to pad your wrist. The fifth measure: symptoms of impaired brain function: handsome memory. Reason: With the increasing popularity of personal computers, people are increasingly troubled by memory decline. The main reason is that they rely too much on computers, which weakens brain function. Mitigation method: 1. Lie flat on the bed before going to bed, relax all over, and put your head back below the edge of the bed to relieve the lack of blood supply and oxygen supply to the brain. 2. Ensure adequate sleep. No matter how stressful the work is, it is essential to sleep for 8 hours every day. We should try our best to ensure the quality of sleep and adjust the blood circulation in the cerebral cortex in time. 3. Practice meditation. It is best to have 20-30 minutes every day to meditate on the relaxing and beautiful things in life, listen to the rhythm of your breathing, and let your mood relax as much as possible. The posture is informal, whether sitting or lying down, the comfort shall prevail. 4. Learn to use the five-stroke input method instead of the associative input method of intelligent pinyin all the time. Try not to use the computer to input handwritten words. Even if you must use electronic documents, you can try to input words with the handwriting board. 5. Change unhealthy diet and eat more brain-nourishing food. The sixth measure: long-term use of incorrect sitting posture symptoms: neck, shoulder and back pain Causes: If you hold your arms high, bow your head and cross your legs under the table when using the computer, you will feel backache, numbness in your neck and shoulders and inflexible arms after working for one hour. Keep this sitting posture for one to one and a half years, and you can get double chin and cervical joint stiffness.