Tell you a good way to keep fit at school: first of all, eat regularly, and never overeat. Never eat high-calorie food two hours before going to bed. You can jog a few laps on the playground after self-study every night. You must jog until you feel hot, which can not only lose weight, but also help you fall asleep. When washing your face, you want to massage your face in circles from below, which can tighten your skin. But to be honest, you are just right now. The main prevention is to stop getting fat! Good luck!