First, abdomen-abdomen on your side.
Action 1: Lie on your side and hold the back of your head.
Action 2: Bend your legs and lift your upper body forward.
Action 3: Go back to action 1.
Second, abdomen-sitting abdomen
Action 1: Sitting posture, the upper body is basically vertical, and the legs are extended forward.
Action 2: the legs are bent and lifted, and the lower abdomen is tightened.
Action 3: fully open and return to action 1.
Third, abdomen-supine leg lifts
Action 1: Lie flat, lift your legs and tighten your lower abdomen.
Action 2: Lift your legs perpendicular to the ground.
Action 3: Go back to action 1.
Fourth, abdomen-group sit-ups.
Action 1: Lie flat and lift your legs perpendicular to the ground.
Action 2: Try to tighten the head and legs.
Action 3: Go back to action 1.
Fifth, abdomen-standing abdominal pressure
Action 1: lunge, hold your neck and lean back.
Action 2: press the upper body forward and exhale.
Action 3: Go back to action 1.