Doing repeated stretching movements of clenching fists and relaxing can increase the softness of tendons.
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"The first place that people who often use computers feel uncomfortable should be their hands. Most people will have finger joint pain, and in severe cases they will suffer from bursitis. The characteristics of this disease are: pain, swelling, stiffness, and occasional "click" sound when fingers are stretched. The older you get, the earlier the symptoms appear, the more obvious they are. The human body has degenerative changes, the degree of lubrication in the tendon sheath is poor, and it is even less resistant to repeated friction. Some old people learn computer and type too much, which not only hurts their hands, but also makes them tired and sore because they don't hold the mouse well.
How can we prevent bursitis? In fact, the method is also very simple: just like warming up before exercise, you should "warm your fingers" before typing and do a set of exercises before going to the computer. First make a fist, release it after 10 seconds, and then move the limbs and the whole body, so that the upper limbs and hands move separately, increasing the blood circulation supply. In this way, even if the exercise is repeated locally, the chance of injury will be reduced.
Correct fingering and posture are also conducive to reducing the chance of hand pain. When beginners tap the keyboard with two or three fingers, the posture is not correct, which is most likely to cause local fatigue damage. If you can use your fingers together, the labor intensity will be evenly distributed and the chance of injury will inevitably decrease. Don't keep working for too long, have a rest, and it's best to stop and have a rest every 15~20 minutes to stretch your fingers. Doing exercise outdoors after using the computer for two hours will help reduce hand diseases and eye diseases. After typing, you can also let your hand "take a hot bath" first, and then repeat the stretching action of clenching your fist and letting go to increase the softness of the tendon. "