Hello, there are many reasons for young people to keep fit, including the following:

1. Prevention of diseases: An important reason for young people to keep fit is to prevent common diseases, such as hypertension, diabetes and obesity. Through good eating habits, proper exercise and maintaining a healthy lifestyle, the risk of these diseases can be reduced.

2. Anti-aging: With the growth of age, the body function will gradually decline, and health preservation will help to delay aging and keep the body younger and healthier.

3. Improve immunity: Health preservation can enhance the body's immunity, reduce the risk of infection, and help the body better cope with stress and stress.

4. Improve the quality of sleep: the fast pace of modern work and life is likely to lead to insufficient sleep or poor quality. Health preservation helps to improve the quality of sleep and improve the sleep effect.

In short, the reason why young people exercise is to keep healthy, delay aging, improve immunity and improve the quality of life.