Boys
- Rapid growth in height and weight. The sharp growth begins at about 13 years.
- The shoulders become wider.
- Pubic hair, as in girls, thickens and darkens, and underarm hair increases.
- More body and face hair.
- The penis, scrotum and testicles become larger.
- Nocturnal pollution (wet dreams) occurs.
- Sperm production begins or continues.
- Developing the ability to get an erection and ejaculate.
- The voice begins to mutate and become deeper.
- There may be swelling under the nipples, which usually is
- passes by the end of puberty.
