Students at school can arrange long-distance running every day. Sprinting is bad for your health and easy to get hurt. It is recommended to run slowly from one kilometer, and two or three thousand is the best.

After running, if the school has fitness equipment, you can do push-ups, pull-ups, sit-ups and so on.

We should arrange flexible schedules, such as running equipment every two days, or running equipment every day and taking a day off every three or four days. We shouldn't sleep too much or too little. About seven hours is enough.

Besides, you mentioned that it doesn't affect height. You can do some vertical jumping in your spare time, and the intensity doesn't have to be great. You can also play basketball often.

And pay attention to your diet. We can't say that you are completely forbidden to eat junk food (at least I think so), but you can eat a little bit a week instead of every day. Pay attention to nutrition, just eat 70% to 80% full, not too much.

The most important thing is persistence. Exercise should avoid three minutes of heat. Remember, hold on!