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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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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Illicit drug use costs the United States approximately $181 billion every year.