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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There are about 255 babies born worldwide every minute.
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The average person's skin weighs twice as much as their brain.
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Only humans shed emotional tears.
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The human brain is more active during sleep than during the day.
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For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
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Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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