The human circulatory system is more than 60,000 miles long.
Fact #2608
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More Human Body Facts
The average person produces about 1–2 liters of saliva per day.
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The human heart pumps blood through the circulatory system.
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Your consciousness can continue briefly even after your heart stops.
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Your stomach gets a new lining every few days to avoid digesting itself.
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A human sneeze travels at around 100 miles per hour and can send 100,000 germs into the air.
Fact #3498 · Human Body
The cornea of the eye has no blood vessels — it gets oxygen directly from the air.
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Your brain uses 20% of your energy.
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Your bones are roughly five times stronger than steel by weight.
Fact #3503 · Human Body
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