
Boys' Puberty Puberty in boys can begin at any time between the ages of 9 and 15 (The Nemours Foundation, 2020). This is a very special time for little men. The first sign that a boy is developing into a man is growth of the testes and scrotum. These changes are followed by pubic and underarm hair growth, an increase in height, deepening of the voice, erections and ejaculation, and the appearance of facial hair. The pituitary gland prompts the testes to begin releasing testosterone, the male sex hormone, into the bloodstream. Testosterone causes teenage boys to develop a manly build. This hormone is also responsible for producing sperm. Sperm production makes the male reproductive system capable of fertilizing an egg and fathering a child. The ability to be a father is a very wonderful and unique gift that God has bestowed upon men. Ejaculation involves the release of semen, which encompasses millions of sperm cells. These sperm have the potential to join ...