1. First, put your hands behind your back and shake hands. Keep your arms as straight as possible and lift them up to the limit. If you do this 50 times, you will feel that the upper part of the scapula is squeezed, and it will also help to exercise the muscles of the chest.

2. Sit up straight, straighten your back and take a deep breath. Bend your knees, put your feet firmly on the floor, put your hands behind your back, keep your body center of gravity, inhale, and exhale with your hips off the ground for 5~ 10 second. Slowly reduce, relax and adjust your breathing. This group of exercises is done 10~20 times.

3. Facing a certain height of fixed objects, such as tables, cabinets, bedsteads, etc. Keep your feet shoulder-width apart, lean forward, hold the object with both hands, hold your head high, bend your back, and press down hard.

4. Press, pause for two seconds, and then get up. Repeat 10 or more groups.