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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The adult human brain weighs about 3 pounds (1,300-1,400 g).
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There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
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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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Your thumb is about the same size as your nose.
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The human brain has the capacity to store everything that you experience.
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Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
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Your heart will pump about 212 million liters in its lifetime.
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