The largest cell in the human body is the female egg and the smallest is the male sperm.
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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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Our Right Lungs takes more air than our left lung.
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On average, there's 100 billion neurons in the human brain.
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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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After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
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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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