VOA常速英语:低头看手机电脑对身体造成慢性伤害

Cellphones and computers are just about everywhere on earth. People hunched over these devices and it causes more harm than they realize. When Dr. Lushantha Gunasekera began feeling pain, he thought he needed strength training. “It was mainly pain on, in my upper back and, and neck, and shoulder area and it was just on the one side.” A fitness trainer at the Orlando Health gym knew the pain was due to poor posture. “Internally rotated shoulders, rounded back. Head is down. Neck is down.” Melendez worked with Gunasekera on his posture. All that hunching or jutting your head forward to look at a screen compresses your neck muscles. This causes fatigue, muscle tension and headaches.

 It can also injure the vertebra in your back, but it can be prevented and corrected. “You’ll be surprised with strengthening your core into impartial corrective exercises can do for your body.” Melendez says even being slightly unaligned can cause major strain, but researchers at Orlando Health found that less than half the Americans they surveyed seem to care. Even a slight misalignment can cause major strain. For every two and a half centimeters your head moves in front of your body, four and a half kilograms of pressure is added to your shoulders. If you move your head forward 100 millimetres, the way imbalance is even greater. “That’s the equivalent to having a child sit on your shoulders.” Gunasekera says changing his posture made a huge difference. “Discussing what I was doing incorrectly. Doing more core exercises, more mobility. Being cognizant every day about my posture. It’s really helped out, and now I don’t have pain there anymore.” Melendez says while you’re using a computer or cell phone, make sure your eye level with the screen. If you can, take frequent breaks and work on your posture.