For exercise 1: unusual sit-ups. That is, put your head in your hands, raise your upper body to 30 ~ 60 with the strength of your abdomen, then hold it for 5 seconds, then lie down, and so on. This action is repeated in 3 groups, each group 15 times.

For Action 2: Sit-ups with upward inclination. That is, put your head in your hands, lift your feet 60 degrees off the ground, lift your upper body, touch your left knee with your right elbow, and then touch your right knee with your left elbow. This action is repeated in 2 groups, 25~30 times in each group.

"Tightening abdominal exercises"

For action 1: Bend forward. Spread your feet slightly wider than your shoulders and spread your hands horizontally. Bend forward, touch the instep of your right foot with your left hand, stand straight, bend forward, and touch the instep of your left foot with your right hand. This action is repeated in 3 groups, each group 10 times.

For Action 2: Bend forward. Open your feet, slightly wider than your shoulders, put the fitness stick on your shoulders, hold it with both hands (if there is no fitness stick, the flat ends of your arms will overlap your chest) and keep your back straight. Then slowly stretch your waist to both sides, depending on your personal situation. Don't bend too much to avoid strain. This action is repeated in 3 groups, 20 times in each group.

"Tightening upper abdominal exercises"

For the action 1: Lie flat and lift your legs. Lie flat on the ground with your hands at your sides. Lift your legs at 90 degrees to your body. Then the abdomen makes the force move the hips up and down again. This action is repeated in two groups, each group 10~ 15 times.

For Action 2: Support the ground at four points. Face the ground, support your body with elbows and toes, and keep upright. Hold this position for 20 seconds or as long as possible.

"Strengthen line practice"

Strengthening action: the feet are slightly separated, the right hand is crossed at the waist, and the left dumbbell (2~3kg) naturally droops. Rely on the gravity of dumbbells to drive the body to bend to the left, pull to the limit and then stand up straight. Then change your right hand and do this exercise again. This action is repeated in 2 groups, 20 times in each group.