The adult human brain weighs about 3 pounds (1,300-1,400 g).
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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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There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
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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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Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
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The human brain has the capacity to store everything that you experience.
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