Exercise before going to bed: the little toe of the left foot stands next to the little toe of the right foot, that is, the feet cross; Then put your hands on your head, keep still from the waist down, slowly turn left on your upper body, stop for a few seconds, then turn right, stop for a few seconds! So keep doing 10 minutes before going to bed every night.
Tip: there must be a sense of tightness in the waist, otherwise it will have no effect!
Persistence is victory, and that's what I did. Oh, the effect is very good!