Sex is all around us. It gets used to sell cars, ice creams, even insurance policies. But how much do you really know about sex? How much do you know about your body and the changes that it is undergoing? What do you need to know before you can make the right sexual choices for yourself?
Find out which changes a girl's body and a boy's body undergo during the teen years.
Find out more about how pregnancy happens and which contraceptive methods you can use to prevent pregnancy.
Here are some answers to questions you may be too shy to ask, as well as some questions to ask before saying yes to sex. Also find out more about how to say no to sex if you feel you're not ready, and what the big deal is about masturbation.
Still have questions about sex or sexual relationships? Why not post a question to Health24's teen health expert, our Cybershrink, or our sexologist?