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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When you take a step, you are using up to 200 muscles.
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Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
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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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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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The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
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