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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Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
It takes about 20 seconds for a red blood cell to circle the whole body.
102
In one day, adult lungs move about 10,000 litres of air.
11
It has been scientifically proven that stroking a cat can lower one's blood pressure!
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If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Mushrooms are more closely related to humans than they are to plants.
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