Then open your legs and keep your feet shoulder-width apart. This is to ensure your stress point and keep your body balanced, which is the premise of your better efforts and execution. Secondly, you need to open your knees slightly outward, which can effectively cushion the pressure damage caused by squatting on your knees. It can also facilitate the next step.
Secondly, you need to relax, and then use the strength of your legs to bend your legs and keep your upper body straight. Only when the legs exert strength can the legs and buttocks be well exercised.
There is also the problem of breathing. When doing all fitness exercises, be careful not to hold your breath when you exert yourself, exhale when you exert yourself, and inhale when you relax. This is the best aerobic exercise.