1. 13 to 15 years old: children of this age can start dumbbell exercise, and it is recommended to use dumbbells with a maximum weight of about half.
2. 1 1 to 12 years old: This age group is the beginning of puberty and is suitable for some sports with both speed and agility, such as skipping rope, sprinting, swimming, martial arts, gymnastics and various sports games.
3. 13 years old to 14 years old: children of this age can exercise with moderate speed, endurance and strength with the rapid increase of weight, such as running, cycling and various ball games.
4. 15 to 16 years old: At this age, all parts of the body are basically mature, and you can start exercises aimed at improving strength and endurance, such as parallel bars, weightlifting, dumbbells and solid balls. And you can also engage in jumping, throwing, running and ball games, but you should pay attention to the appropriate intensity and time of exercise to avoid excessive fatigue and injury.
5. 17 years old to 18 years old: The physical development of this age is close to that of adults, and they can participate in almost all kinds of sports, but the amount of exercise is lower than that of adults.
In short, dumbbell exercise should be carried out according to personal physical condition and health assessment, and at the same time, correct exercise methods and safe operating rules should be followed.