The adult human brain weighs about 3 pounds (1,300-1,400 g).
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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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The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
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The human brain uses approximately as much energy as a 10 watt light bulb.
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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The average person's skin weighs twice as much as their brain.
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If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
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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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