Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
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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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Gorillas can catch human colds and other illnesses.
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Our brains have a negativity bias and will remember bad memories more than good ones.
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The human eye blinks an average of 4,200,000 times a year.
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When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
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