25 Things You Probably Didn't Know About Your Body and Health

25 Things You Probably Didn't Know About Your Body and Health: "In the spirit of those annoying, addictive, you-know-you're-reading-them-even-though-you-wish-you-weren't Facebook notes popping up everywhere, Health.com presents its list of 25 random things you might not know about the human body, nutrition and exercise, sex, sickness, and health. Go ahead: Pass it on to your friends."