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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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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.