Children don't need to buy fitness rings. Children's physical development needs various exercises, not a single exercise. Fitness circle may not be suitable for children's physical structure, and it may also cause unnecessary burden. Correct exercise is very important for children's physical development. Parents are advised to choose sports suitable for their children's age and physical condition. Let children exercise in outdoor activities and sports competitions, and also cooperate with children's extracurricular activities and sports club activities to let children exercise in a relaxed and happy atmosphere.