The adult human brain weighs about 3 pounds (1,300-1,400 g).
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Every year your body replaces 98% of your atoms.
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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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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 human brain uses approximately as much energy as a 10 watt light bulb.
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When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
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It takes about 20 seconds for a red blood cell to circle the whole body.
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After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
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