What do you mean by stomach shaking? Belly dance, also called Middle Eastern dance, is incomprehensible from the surface of its name. If it is the most basic, the belly shaking you mentioned is actually a basic skill in belly dancing, called erect sago, which is driven by bending and straightening the thighs back and forth. When I was almost there, my stomach seemed to be shaking. However, if you haven't learned it, you still need to ask a teacher for guidance, because many small places are prone to misunderstandings, and it will hurt your body or nourish your mind and make mistakes that are not easy to correct. This action, as I said just now, sounds simple. Pay attention to restoring the buttocks and abdomen when doing it. Knees should be slightly bent (that is, they should be able to stand up straight and bend at any time). When exchanging knees back and forth, pay attention to the strength of the thigh, but relax the thigh. Don't tilt your crotch up and down with the exchange of knees, try to stay still ~ ~ ~.
Is your friend interested in belly dancing? ? It's actually a technical job. Good for people. You can watch many videos of masters. Welcome to the belly dance family?