Okay, everybody knows that runners eat bananas because they have a lot of potassium, but why do runners need potassium?
Potassium and sodium ( salt) are the two main chemicals responsible for regulating the flow of water in and out of cells. Say what? Potassium keeps you from cramping up and feeling fatigued during and after a run.
Runners World has an excellent article on it here:
http://www.runnersworld.com/article/0,5033,s6-53-84-0-8955-1-1X2X3-4,00.html
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