Your body is creating and killing 15 million red blood cells per second!
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You're born with 300 bones, but when you get to be an adult, you only have 206!
17
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
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35,000 people in the U.S. will die from the flu annually.
6
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
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Bearing a male child can alter a woman's brain by leaving male DNA that can persist for the rest of her life, making her less likely to suffer from Alzheimer's disease, promote tissue repair, and improve her immune system.
16
Chocolate, sex, and laughter are all important for a healthy brain.
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Your body is creating and killing about 2.4 million red blood cells per second.
17