Boys usually enter puberty after the beginning of spermatorrhea, usually at the age of 13 ~ 15 years old, is in the golden period of growth and development, or can continue to grow taller, some boys can grow another 10cm or so, but there will be individual differences. Ejaculation is a manifestation of the boy entering puberty, the male testicles began to gradually develop and mature, began to secrete more androgen. Under the stimulation of androgens, muscles, bones and other tissues and organs will develop rapidly, and height will also increase significantly. From puberty to maturity most boys are able to increase their height by 10cm. However, due to different nutritional status, different amount of exercise, and differences in genetic factors, there will be some differences in height growth. In general, during puberty, pay attention to strengthen exercise, enhance nutritional support, part of it is possible to grow another 10cm or so.