Lie on your back with your knees bent, your feet flat on the ground and your hands lightly on your thighs.
Keep your shoulders, neck and head off the ground with all your strength, keep your lower body still, and try to touch your knees with your fingertips. Step 1~2 continuous cropping 10 times, rest 1 minute/kloc-0 times, and do it five times before going to bed.
Take a prone position, with your forearms flat on the floor to support your body, so that your upper body is slightly off the ground and your feet and toes touch the ground.
Support your body with your forearms and toes, keep your lower body off the ground for 20 seconds, and then return to Step3 to rest 1 minute. Do it five times before going to bed.
1, chest clamp. Requirements: Sit your legs naturally and keep your upper body upright. Hands together, elbows together. W