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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Cyanide works by making the human body unable to use oxygen.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%