The human body contains over a billion miles of DNA.
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The human brain doesn't stop developing until about 25 years old.
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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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Your thumb is about the same size as your nose.
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An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
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The largest cell in the human body is the female egg and the smallest is the male sperm.
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If your DNA was stretched out it would reach to the moon 6,000 times.
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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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