15 and 16 years old are not suitable for weight training. At this age, you can do more physical exercise (such as jumping, whole body exercise, stretching) to promote muscle development and development. After 15 and 16 years old, you can strengthen muscle tissue and enhance strength through moderate weight-bearing training. Generally speaking, it is enough to carry no more than half of your own weight.

Teenagers also need proper muscle exercise to promote their development. Only when you are too young (such as a child) should you pay attention to the amount and intensity of exercise. At this age, you should not focus on the development of muscles and strength, but on flexibility, coordination, balance and technical exercise.

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 not only makes teenagers muscular, but also makes them psychologically strong, which can make them more used to being under pressure. Of course, dumbbell training can be used as a part of moderate-intensity strength training for teenagers.

If it won'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.