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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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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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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Your heart will pump about 212 million liters in its lifetime.
26
The human brain doesn't stop developing until about 25 years old.
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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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