There are about 1,400 different species of bacteria in your belly button.
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There's 100 trillion good bacteria living in your body.
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Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
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In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
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The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
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In 1996, research found that having excessive body hair is linked to higher intelligence.
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Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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