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TIL that Potassium's main role in the body is to help maintain normal levels of fluid inside our cells. Sodium, its counterpart, maintains normal fluid levels outside of cells. Potassium also helps muscles to contract and supports normal blood pressure.

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R7d5l TIL The Peregrine falcon can reach speeds of 200 mph during its high speed dive, making it the fastest bird in the world, as well as the fastest member of the animal kingdom.
N75dM TIL the reason you should contact a doctor if your erection lasts longer than four hours is that the blood is not circulating meaning that the cells are not receiving oxygen. The longer an erection is maintained, the greater the risk of permanent scarring of the penile tissue due to cell death.
JYW1B TIL that during the "Red Scare" of the McCarthyism era, in 1953 the Cincinnati Reds baseball team changed its name to the Redlegs, only reverting back to Reds after the 1959 season.
694j8 TIL Coffee contains two chemicals(Cafestol and Kahweol) which can significantly raise your cholesterol. Normal paper filters remove them, but unfiltered coffee is full of them. However, they may have anti-cancer and anti-diabetic properties.
GYOE1 TIL John Kluge, as Chairman of MetroMedia, was the Richest Man in America in 1987. During WW II, the German born Kluge served as an interrogator at a secret military base that processed high ranking Germans, including those who were part of Operation Paper Clip, including Werner Von Braun.