Only 15 years old is the time to grow up. If you lose weight, don't take unhealthy methods such as dieting, which will affect your physical development. Exercise more at ordinary times, and boys can play basketball more when they are free, which is very helpful to increase their height. Girl, if you have nothing to do, put more pressure on leg press. If they get taller, they should eat more protein, take more calcium, eat an egg for breakfast and drink a glass of milk before going to bed at night, all of which will help to increase their height. They should eat more beef and mutton, eat less or no fried food and carbonated drinks, have a balanced diet and be full at 8 points per meal. Eat more fruits and vegetables.