There are about 1,400 different species of bacteria in your belly button.
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In Ancient Greece, small penises were desirable, and big ones were for ‘old men and barbarians’
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In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
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It takes twice as long to lose new muscle if you stop working out than it did to gain it.
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Your thumb is about the same size as your nose.
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All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
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The adult human brain weighs about 3 pounds (1,300-1,400 g).
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