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On average, the stomach produces 2 L of hydrochloric acid per day.
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It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.