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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Your body is creating and killing about 2.4 million red blood cells per second.
17
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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Every year your body replaces 98% of your atoms.
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Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
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After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
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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.
515
The average sperm cell swims at 8 inches per hour.
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