Listen to the class arrangement first, then ask the key points of the class actively, and finally write the class suggestions. Fitness instructors are introverted. In group exercises, you can listen to the coach's classroom arrangement first, then ask the coach what he can't do, and finally describe his classroom suggestions and feelings about the difficulties in class. This will not cause trouble to the coach, but also can learn group calisthenics well. To learn group gymnastics well, we should pay attention to the sense of rhythm, combine strength, speed, coordination and flexibility, and practice regularly.