The Sexual Health Channel explores the functions -- and dysfunctions -- of the reproductive system. Learn about maintaining a healthy sex life and avoiding and treating sexual problems.
  • Male Reproductive System
  • Female Reproductive System
  • Contraception
  • Sexual Dysfunction
  • Sexuality

As science advanced from philosophy to empirical knowledge, groundbreaking discoveries -- like the five on this list -- revealed a lot about the reproductive equipment inside human bodies. Which revolutionized our understanding of sex the most?

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Most men and women have an active libido, though the relative strength of that sex drive can vary significantly between people and over time. Grab a few minutes to take your sex drive knowledge for a test drive.

Test Your Knowledge: How Not to Get Pregnant

Try to estimate when you're ovulating and have sex regularly -- that's the basic recipe for getting pregnant. But what about when you're NOT trying to make a baby? Do you know the ins and outs of how not to get pregnant?

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