15-year-old teenagers also need moderate muscle exercise, which is beneficial to their growth and development. Generally speaking, the load does not exceed the weight.

Muscle exercise will not make people grow taller, but when they are too young (such as children), we should pay attention to the amount and intensity of exercise. At this age, they should not focus on the development of muscles and strength, but on flexibility, coordination, balance and technology.

Strength training subjects such as dumbbell training will not affect height. The weightlifters you usually see are short, because in order to get good grades, some short and strong people will be selected in the selection of athletes.

Another fact is that scientific moderate-intensity strength training for teenagers is of great benefit to their development; Training can not only make teenagers' muscles strong, but also make them psychologically strong, which can make them more accustomed to bearing pressure. Of course, dumbbell training can be used as a part of moderate-intensity strength training for teenagers.

If you can't grow any longer, you can carve your body shape with dumbbells to improve your strength or carry out functional training. If you are in adolescence, you should pay attention to the counterweight of dumbbells, and it is not advisable to use too heavy dumbbells for training. The total weight of a pair of dumbbells should be controlled below half of its own weight. And it is best not to exercise for more than 45 minutes at a time.