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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If you are cold you are more likely to be hungry because you use energy to keep warm.
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It takes about 20 seconds for a red blood cell to circle the whole body.
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Yawns are more contagious among people with closer relationships.
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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.
46
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
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Every year your body replaces 98% of your atoms.
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