According to the following requirements. 1. Choose exercise according to the physical and mental characteristics of teenagers. In the early stage of adolescent development, physical exercise should pay attention to sensitivity, coordination and flexibility. For example, running in place, jumping in place, aerobics, games, table tennis, martial arts, skipping rope, kicking shuttlecock and so on. In the middle of adolescence, physical exercise should choose speed events. Such as short distance running, variable speed running, repeated running, fitness running, badminton and so on. In the late adolescence, the development of various organs is more and more mature, close to adults. Physical exercise can choose general endurance and strength exercises. Such as middle and long distance running, mountaineering, swimming, cycling, tug-of-war, playing football, pull-ups, push-ups, sit-ups, traveling, skating, boating and so on. 3. Choose exercise according to teenagers' physical condition. Teenagers with normal growth and development, good health, good physical condition and a certain exercise foundation can choose to exercise with a large amount of exercise. For example, long-distance running, sprinting, playing football, cycling and playing basketball. If teenagers are physically weak, they should carry out medical sports activities step by step and choose some sports with less exercise. Such as walking, jogging, Tai Ji Chuan, Tai Chi sword, etc. 4. Choose sports according to teenagers' study, work and life. Teenagers often study in a sitting position because of the heavy academic burden, and their mental work is tense. Therefore, after studying for a period of time, they should take part in appropriate sports activities and have a positive rest. For example, doing radio exercises, eye exercises and taking an active part in extracurricular activities between classes can make the originally excited brain cells get a complete and full rest, which is helpful to improve learning efficiency and keep healthy. This newspaper synthesizes II. Choose sports according to teenagers' hobbies.