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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One human hair can support 3 ounces.
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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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Our Right Lungs takes more air than our left lung.
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Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
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.
73
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
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