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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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Your heart beats over 36 million times a year.
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There are more bacteria in your mouth than there are people in the world.
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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.