The largest cell in the human body is the female egg and the smallest is the male sperm.
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All the chemicals in a human body combined are worth about 6.25 euro (if sold separately).
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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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It takes about 20 seconds for a red blood cell to circle the whole body.
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It takes twice as long to lose new muscle if you stop working out than it did to gain it.
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If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
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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.
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