The human brain has the capacity to store everything that you experience.
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The largest cell in the human body is the female egg and the smallest is the male sperm.
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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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It takes about 20 seconds for a red blood cell to circle the whole body.
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Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
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The human brain doesn't stop developing until about 25 years old.
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Your thumb is about the same size as your nose.
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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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