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Did you know?
If you could remove all of your skin, it would weigh up to 5 pounds.
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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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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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Your heart beats over 36 million times a year.
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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
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