How should teenagers protect their health?

Teenagers are in a critical period of growth and development. Health in this period is very important, but this period is also a critical period for learning. With a healthy body, you can be energetic and study hard. How to ensure the health of the body, I think it is closely related to nutrition and physical exercise. Growth and development need nutrition, but they also need digestion and absorption. Proper physical exercise can just promote digestion and absorption, so that teenagers can ensure adequate nutrition, so that they are full of energy and get twice the result with half the effort. However, in the exam-oriented education environment in China, some parents often ignore the importance of physical exercise to their children's study, so that many people do not balance the relationship between physical exercise and hard work in adolescence. This has damaged the health of teenagers to some extent!