Teenagers are in the developmental stage, and their height and weight will increase. Boys should pay attention to nutrition. Boys who are still in school cannot lack nutrition, and learning is more important. Teenagers have free time during the study stage. The best way is to run in the morning every day. It's spring, and the weather is very warm. Get up at 5:3O in the morning and run for half an hour, then read for half an hour in the morning, and then eat the most at school. Make rational use of time, eat more fruits and vegetables, drink more boiled water, eat less at night, and spend ten minutes doing sit-ups and push-ups at home every day, so as to lose weight and pay attention to physical nutrition.