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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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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.