1.enlargement of the scrotum and testes and then the penis
2.the first growth of public hair becomes long and soft.
3.they start to sweat more
4.the voice becoming deeper in tone
5.some boy may experience acne
6.hair on face and body
7. bodies increase in size
this can last about 2 to 5 years and normally starts between the ages of 10 and 16!!!