Nowadays, there are more and more "mobile phone control" and "low-headed people". When you look down for a long time, your neck will be sore and stiff. The president of the Insects and Plastic Surgery Hospital in Chiba City, Japan, said that he always bowed his head and played with a mobile phone, which would reduce the elasticity of the anterior scalene and pectoris muscles of the neck and become stiff and shrinking.
You may wish to do a simple self-test: press the muscles above the clavicle, if the pain indicates that the front scalene is overburdened; then look down at the shoulders, if the shoulder of the arm that often plays the phone leans forward than the other side, then It shows that the pectoralis minor muscle has atrophy. There are two simple ways to exercise the scalene and pectoralis minor muscles: the palm of your hand is pressed against the top of the head, the head is tilted to one side, the cheeks are touched to the shoulders, and then the direction is changed. This allows the anterior scalene to be stretched. It returns to normal elasticity; the left hand presses the right shoulder, swings the right arm back and forth, and then changes hands to exercise the chest muscles.
The posture when looking at the phone is also very important. Keep your head upright and straight, and the phone should be flush with your line of sight or slightly lower. Professor Takuhiko of the University of Tokyo said that maintaining a posture for 10 minutes does not change the blood circulation of the muscles in the relevant parts, resulting in muscle fatigue, so change the posture or do the swing arm every 10 minutes.
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