The human brain doesn't stop developing until about 25 years old.
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The human brain has the capacity to store everything that you experience.
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One human hair can support 3 ounces.
191
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Every year your body replaces 98% of your atoms.
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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 adult human brain weighs about 3 pounds (1,300-1,400 g).
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