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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The largest cell in the human body is the female egg and the smallest is the male sperm.
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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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Enamel is hardest substance in the human body.
61
Yawns are more contagious among people with closer relationships.
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Your body is creating and killing about 2.4 million red blood cells per second.
17
An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
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