This process, loosening during arousal and tightening afterward, happens no matter how often the woman has sex. The vagina stretches a great deal during birth,

The Vagina and Sexual Intercourse – How do vaginas work? Learn about the female reproductive system and how vaginas work.

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Sexual intercourse in the missionary position, the most common human sex position, depicted by Édouard-Henri Avril

Vaginal sex – how to do it, and what to expect. Remember those all important condoms to prevent pregnancy, STIs and HIV.

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The vagina is only one part of these organs, and not the whole of them, That makes anal sex potentially more painful if not done with care,

Does size matter for women? WebMD discusses whether vagina size might have impact on female sexual pleasure.

Your Vagina On Sex From the first sexy thought to that ultra-satisfying orgasm, here’s what’s happening below the belt. By Malia Jacobson November 12, 2014