1. Slowly raise your arm, from front to top, and slowly lower it from front to bottom, 20~30 times each time (or try your best, not limited). The upper body is required to be straight, the arms are straight, the shoulders are natural, and there is a feeling of lifting the chest muscles.

2. Bend the elbow at the shoulder side and turn slowly from front, up, back and down. After doing 8~ 10 times, turn around in the opposite direction. Require upper body and head integrity.

3. Put your elbow on your chest, and push your right hand slowly as far as possible, with your right foot following, your right foot leaning back, your left hand pushing up, and your left foot following, and then push up slowly, * * * 20 ~ 30 times in turn (or indefinitely, until your chest and arm muscles are sore).

4. After doing the above freehand exercises, you must do the whole body relaxation exercises.