When you grow up. Forget about losing weight. On the premise of ensuring nutrition. Control food intake. Eating two or two meats every day is enough. That is, a few pieces. No matter what kind of meat it is, you can only eat this one day. Practice yoga. Dance. Swimming. I have practiced all three kinds of sports, and everyone agrees. But anyway. Hang in there. There is not much time for yoga. You can do some actions during recess, before going to bed, even on the bus, standing or walking. After a period of time, you will find that your body is very flexible and uncomfortable without stretching every day.