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Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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There are 60,000 miles of blood vessels in every adult human.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.