I don't know if you are a boy or a girl, but the reason why I ask is because some sports are for building muscles. For example, swimming will widen your shoulders. If you are a girl, it is not easy to buy clothes if your shoulders are too wide. On the contrary, it doesn't matter to boys. Running will make the calf grow muscles. If I want to slim my face and waist, I think I should slim down my whole body first, so that my figure will be more symmetrical. My experience is to walk quickly for more than 30 minutes at a time, which is very effective. The school has a treadmill, so we must stick to it. You must massage your calves after walking, there will be no muscles.

Are you a girl? If so, I'll tell you one of my findings: swimming helps breast enhancement. A little contradictory. You can swim less for a while. This is my experience.