Look down at the phone and let your neck bear 50 pounds？ More than that.

　　Not long ago, the news that "playing with your head down for a long time is equivalent to carrying 50 Jin on your neck" appeared on the hot search list of Weibo. As the function of smart phone becomes more and more powerful, people’s dependence on it is gradually deepening. At the same time, the improper use of mobile phones has brought troubles to our health. The website "Active Life" in the United States recently sorted out and summarized the "disaster" caused by long-term improper use of smart phones.

　　Mobile phone elbow

　　The scientific name is "cubital tunnel syndrome". When the ulnar nerve in the cubital tunnel is inflamed or stimulated, cubital tunnel syndrome will occur. This kind of pain is like being hit on the ulnar end, commonly known as numbness. Keeping the elbow bent at a 90-degree angle for a long time can cause elbow pain. When talking for a long time, people will hold their mobile phones to their ears and their elbows will naturally bend. This will put pressure on the nerves, which will reduce blood flow and lead to inflammation. Cell phone elbows can cause numbness and tingling.

　　Therefore, we can try to change the way of holding the mobile phone when making a phone call and avoid holding the mobile phone with the elbow bent at right angles. If conditions permit, turn on the hands-free function, so you don’t need to talk with your mobile phone.

　　Little finger injury

　　When you answer the phone, poor little finger has to work hard. It bears most of the weight of the smart phone, sometimes as long as an hour, causing unspeakable pain.

　　However, this injury is not permanent. Take a break from time to time while using your smartphone to relieve the pain of your little finger. Do hand stretching exercises at regular intervals to stimulate blood flow and relax fingers.

　　Bad posture

　　Users of smart phones often use it to check emails and read information in WeChat friends circle. Looking down at the phone repeatedly will cause hunchback, leading to posture problems. Bowing your waist or bending your neck will make your muscles tense.

　　Try these good ways to correct posture: sit upright, put your mobile phone at eye level, don’t arch your back and relax when you answer the phone.

　　Wrist pain

　　Repeated hand movements can cause carpal tunnel syndrome. Carpal tunnel is a small passage near bones and ligaments. When the median nerve is compressed, you will feel tingling and numbness in your thumb and other fingers, and weakness in your hands and arms. Constantly sliding the screen and typing can hurt your wrists and hands.

　　Wrist pain is a common complaint of smartphone users. Repeated actions related to excessive use of smart phones may also cause wrist disability.

　　Thumb pain

　　Although the touch screen makes communication easy, it adds a lot of work to the thumb. The tendon of the thumb will be inflamed by repeated beating. When bending the thumb, inflammation can cause thumb pain and click.

　　The solution is to let the thumb rest from time to time and finish its work with other fingers. If the pain persists, see an orthopedic surgeon. Thumb splint (a kind of hand plaster for protecting and fixing thumb) can provide support for thumb to relieve pain.

　　eyestrain

　　Excessive use of smart phones will make your eyes tired, which will lead to other problems.

　　Blinking times decrease. People need to blink to keep their eyes moist. Blinking is a natural way to prevent eye contact with dust and sunlight. Users of smart phones stare at the phone almost without blinking, which reduces the time for eyes to recover, leading to dry eye syndrome.

　　Squinting when users read small fonts on mobile phones, it is easy to squint. This will put pressure on the eyeball and blur the vision.

　　Dazzling glare from the smart phone screen will cause eye fatigue.

　　In order to avoid the above situation, blink frequently to keep the eyeball moist, stick an anti-glare film on the screen, lower the brightness of the mobile phone, enlarge the display font size, keep the screen clean (wiping off fingerprints and dust can improve the definition) and put the mobile phone 40~45 cm away from the face.

　　Spread germs

　　Users will take their mobile phones to various places, such as shops, gyms and bathrooms, where the germs will be transferred to their smartphones. Bacteria colonized on mobile phones can spread various diseases, and some rather terrible bacteria thrive on mobile phones, such as:

　　Escherichia coli If you have ever brought your mobile phone to the bathroom, you are likely to be infected with Escherichia coli. This bacterium lives in the intestine and is transferred to the feces. Escherichia coli can cause diarrhea, food poisoning and other gastrointestinal problems.

　　Streptococcus This is another common bacterium that lives on smart phones. It can not only cause strep throat in children, but also cause scarlet fever, necrotizing fasciitis and toxic shock syndrome.

　　Influenza virus influenza virus can survive on smartphones for up to 24 hours. Therefore, you should wipe your mobile phone with alcohol cotton balls every day.

　　Staphylococca, a common bacterium, also lives on smart phones, and some of them are dangerous, which can cause skin infections and even life-threatening in severe cases. Staphylococcus can also cause pneumonia and blood infection.