Why does puberty happen

In response to the signals, the gonads produce hormones that stimulate libido and the growth, function, and transformation of the brain, bones, muscle.This is a normal part of puberty.While these ages are based on estimates, puberty can occur sooner or even later.Hair will grow on your face and under your arms.Puberty is a time of rapid brain development and identity formation, with many emotional changes for both boys and girls.Puberty occurs during teenage years and includes both physical and emotional changes.

Your penis and testicles will grow larger.The ovaries in a girl, the testes in a boy.Puberty usually begins to appear in girls between the ages of 9 and 15 while boys begin puberty between the ages of 10 and 13.Puberty is a phase of rapid growth, at the end of which the body reaches reproductive maturity.(from 10 years old to 15 years old) the testicles grow in volume and size.