The adult human brain weighs about 3 pounds (1,300-1,400 g).
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For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
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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.
46
The human brain uses approximately as much energy as a 10 watt light bulb.
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Chewing gum boosts your brain power.
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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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