If you don't learn this from primary school, you can only learn it as a hobby, because ballet pays great attention to physical condition and training since childhood. I have been in contact since I was ten years old, and it is very hard to lose weight all the way. If all the girls in school are naked, wrap the place where you feel fat with plastic wrap, then wear thick clothes and go out for a run, at least four times a week, once every other day. This method is most effective in summer. Don't forget to wear a sun hat and be careful about heatstroke diet. Eat more vegetables in the morning, not rice, and only fruit at night, but it is unscientific to eat well in the morning without hunger strike. The ballet dancers you see are very thin, because they are very tired every day, and they have to attend two hours of training classes every day, followed by countless rehearsals. It's hard for me to see and adopt it with my own eyes.