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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One human hair can support 3 ounces.
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The human brain uses approximately as much energy as a 10 watt light bulb.
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Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
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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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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 body is creating and killing about 2.4 million red blood cells per second.
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