You can raise your head, tighten your chin and feel your neck tightened. Do it every day when you are free, 20 times a day, five or six times a day, then stand up straight, with your legs shoulder-width apart, then turn your head, turn left once, then do the upward movement once, then turn right once, and continue doing it for one week. You can usually see the effect. This group of movements can not only thin belly, but also slim the chin, which is very harmonious. Easy to use and effective.