Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
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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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One human hair can support 3 ounces.
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Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
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The human body contains over a billion miles of DNA.
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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 adult human brain weighs about 3 pounds (1,300-1,400 g).
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