Sit-ups: Lie flat on the ground with your hands crossed on your chest and your legs slightly arched. For example, get up and lie down and repeat several times.

Bend your knees and lift your legs: lie flat on the ground, keep your hands close to the floor, bend your knees and lift your legs (the fatter your knees are, the more you can bend them), then put them down and repeat them several times, which will help to exercise your lower abdominal muscles.

Exercise is more expensive than persistence. If you want better results, you need the cooperation of thunder 3, the nutrition can keep up, and you won't worry about rebounding because of eating.