1, action 1: supine abdomen. Action points: separate your legs, bend and stretch naturally, hold your head lightly with your hands, or point to your ears without exertion. This action is mainly to exercise the upper abdominal muscles and lower chest. If your arm is stressed, it will make your biceps exert force, and your waist and abdomen are lazy. Number of action groups: 3-5 groups, 20-30 times in each group, and rest between groups 1-3 minutes.

2. Action 2: Swing your legs alternately. Support your hips with your hands, stabilize your upper body with your arms slightly and swing your legs alternately. This action is mainly to exercise the abdominal muscles of the lower body. Number of action groups: 3-5 groups, 20-30 times for each foot in each group, and 2-5 minutes rest between groups.

3. Action 3: Russian twist. This action can effectively exercise abdominal muscles (such as mermaid line) and make your overall abdominal muscles more three-dimensional coordination. Number of action groups: 3-5 groups, 20-30 times in each group, with 2-4 minutes rest between groups.