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#30 Ivan Tedesco, on his way to winning the first moto of the 125cc class at Washougal.
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A couple of scientists from Wake Forest University noted that water contains trace elements of manganese. That's a metal that occurs in nature, so we're naturally exposed to it all the time; but when it enters the body in higher concentrations than normal, it can cause brain damage. The scientists hypothesized that showers would would aerosolize any manganese in the air and make it inhalable, a particularly effect way of getting the metal into your system.