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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.
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When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.