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 heart will pump about 212 million liters in its lifetime.
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It takes about 20 seconds for a red blood cell to circle the whole body.
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Every year your body replaces 98% of your atoms.
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The human body contains over a billion miles of DNA.
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If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
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When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
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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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