Our bodies are always changing, especially during the period of time between childhood and adulthood. This time is called puberty and it is when your sexual and reproductive organs mature.
During puberty you will experience many physical, emotional and social changes. It can seem a bit overwhelming, but remember that everyone goes through it.
During this time you will probably start to become a lot more aware of your body and what it means to be a girl or a boy. Have a look at the Female Anatomy and Male Anatomy pages to get a better idea of how people look on the outside and the inside.
If you have a sexual health question that you would like answered you can use our Ask a Question service.