The adult human brain weighs about 3 pounds (1,300-1,400 g).
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Your heart will pump about 212 million liters in its lifetime.
26
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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The largest cell in the human body is the female egg and the smallest is the male sperm.
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It takes about 20 seconds for a red blood cell to circle the whole 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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The average person's skin weighs twice as much as their brain.
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If you are cold you are more likely to be hungry because you use energy to keep warm.
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