Two egg whites and a piece of tofu for breakfast. The egg whites are full and not very hungry. Run for half an hour before lunch, rest 10 to 20 minutes, and then have lunch. Vegetables, meat and staple foods should be controlled, not too oily. If the school has fitness equipment, it is best to do it between classes, and running is not recommended after school at night. Fun running is unhealthy, you can consider doing sit-ups.