Puberty is the physical changes that happen when a boy becomes a man.
It can happen anytime between 10 and 18 years old.
Signs of puberty include:
Growing hair around the penis.
Your balls and penis grow.
Hair grows on your face, underarms, on your chest or over your balls.
You might get erections. This is where your penis goes hard.
You might have wet dreams. This is where sperm or fluid comes out of your penis when you are asleep.
