We spend tons of time talking about girls' health, but guys are often overlooked. We know guys have questions about their bodies, too. So here's a section just for the boys.

Where's the Sex Ed in College?

By Chelsea Biemiller, 19, Contributor

At my college, there’s a 30-minute “freshman seminar” that involves watching a poorly filmed and horribly acted movie on how to protect yourself against sexual violence. Not counting a human sexuality class that’s available only to third-year psychology majors, this is the closest thing we get to sex ed.

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What's the average size of a penis? I cum really fast when I'm having sex. What can I do? What are blue balls? Sometimes I can't get an erection. Is there something wrong with me? Will masturbating a lot make a guy's sperm less potent?

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Is masturbation a taboo topic among you and your friends?

AIt's taboo for girls, but not for guys.
BYes, it's taboo...for everyone.
CNot at all!
DI don't know.

Whether you have a penis, know someone who does or are just an avid student of human anatomy, we've got a quiz for you.

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Here are some of the best Web sites, hotlines and books about male sexual health.