When you look up at the blue sky and see white dots flying around, you’re actually seeing your own white blood cells.
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35,000 people in the U.S. will die from the flu annually.
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Although African-Americans make up only 13% of the U.S. population, they accounted for one half of the estimated new HIV/AIDS diagnoses in 2004.
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You're born with 300 bones, but when you get to be an adult, you only have 206!
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25% of your bones are located in your feet.
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Human teeth are almost as hard as rocks!
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When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
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Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
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