1, climb your feet with both hands. Stand upright and relax, and your legs can be slightly separated. Raise your arms first, then lean back, and try to reach the maximum backward tilt. Pause for a moment, then bend forward, move your hands down, try to touch your feet, pause again, and then return to your original position. You can do 10~ 15 times continuously. Be careful not to cross your legs when you bend forward, otherwise the effect will be bad. Old people or hypertensive patients should move slowly when bending over.

2. boarding in the air. Lie on your back on the floor with your lower back close to the ground. Put your hands on your head and open your arms. Lift your legs and climb on the bike slowly. Exhale, lift your upper body, touch your left knee with your right elbow, hold your posture for 2 seconds, and then restore. Touch the right knee with the left elbow again, hold it for 2 seconds, and then slowly return to the starting position.

3. Lift your legs and roll your abdomen. Lie on your back on the floor with your lower back close to the ground. Put your hands on your head and open your arms. Raise your legs at 90 degrees to your upper body, cross your legs, and bend your knees slightly. Exhale, contract the abdominal muscles, lift the upper body, keep the lower back off the ground for 2 seconds, and then slowly return to the starting position. Keep your chin down to your chest.