1, flat support jump. Support on the floor with your arms and toes, keep your back straight, put your feet together, and start to jump out, jump back, and then jump out. Keep your abdomen tight during the whole process, don't stop, stick to it.

2. Lie flat on the ground, spread out your arms, stick them tightly on the floor, straighten your legs up by 90 degrees, straighten them down, cycle back and forth, and straighten them down. Most importantly, keep your legs straight.

3. Keep the upper body in the same posture, put your legs together in the lower body, lean to one side and then rotate back to the other side. One left and one right, hold on for 30 seconds.

4, back to the flat state, this action is like climbing a mountain, legs alternately climb up. This action is very helpful for practicing vest line.

5. Russian rotator. Put your hands together and rotate to your sides. Your eyes follow the movements of your hands. If you want to increase the difficulty, you can leave your feet off the ground.