There are about 1,400 different species of bacteria in your belly button.
10
Held in farts enter your bloodstream and are bad for your body.
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An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
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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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If you hold farts in during the day, they'll just come out when you sleep.
16
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
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In 1996, research found that having excessive body hair is linked to higher intelligence.
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