(1) Lie on your back at five o'clock, straighten your lower limbs, land on your heels, elbows and several heads, and try to hold your chest out for 3-5 seconds. Repeat 10 times. (2) Half-bridge supine, legs bent 90 degrees, both upper limbs naturally relaxed and straightened, then hip and back lifting for 5- 10 seconds, and repeated 10 times.
(3) The swallow is prone, with both lower limbs and upper limbs straight, and the head raised for 3-5 seconds at the same time, and repeated for 5 times.
(4) Stand in a squat posture, with both upper limbs naturally relaxed or hands clasped behind the head, then squat for 3-5 seconds, then stand again and repeat for 5 times.
(5) Stand with hands akimbo, bend over for 90 degrees at most, and repeat for 20 times.
(6) Stand backward, with hands akimbo, and do backward extension. Repeat 10 times.