There are two main points in belly-in jumping, one is belly-in and the other is jumping. Simply put, jump up as hard as possible, then bend your knees and keep your thighs as close to your abdomen as possible. The upper body can also lean on your thigh properly. Of course, stretching before jumping is also very important, and relaxation of abdominal muscles is essential.

It should be noted here that belly jumping is to spread your feet shoulder-width apart and then stand in place and take off. It needs a rebound action, as well as toe pad and heel lift, which mainly tests your hand and foot coordination and your balance. Don't forget to breathe, it can play a very good auxiliary role.