Hello, buttock is usually due to incorrect hip posture, so you should keep your hip (hip bone) level at ordinary times. After keeping the hip level, the upper body can stand upright.

When the novice's leg support is not enough, the pursuit of low frame often leads to muscle tension at the hip root and can't help pouting. I suggest you take the elevated road first and squat down on the basis of keeping your hips straight. Once you can't keep your hips level, stop falling.

Boxing practice is a gradual process. We should improve it step by step, and don't be eager for quick success. Now that we have found our own problems, we should concentrate on training the waist and hip position and make efforts to standardize it. This process is practicing martial arts. With the increase of skills, the problem of pouting can be solved slowly.