Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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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.
102
It takes about 20 seconds for a red blood cell to circle the whole body.
102
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
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If your DNA was stretched out it would reach to the moon 6,000 times.
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All the chemicals in a human body combined are worth about 6.25 euro (if sold separately).
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