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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A human being loses an average of 40 to 100 strands of hair a day.
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The average person's skin weighs twice as much as their brain.
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The human brain doesn't stop developing until about 25 years old.
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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 would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
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In one day, adult lungs move about 10,000 litres of air.
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