Ever since I started running, all I know is that I need to drink a sh*t ton of electrolytes. But I would like to understand why on a physiological level.
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So to add to this question. Do we need salt in our blood due to the fact that going way back in our evolutionary tree all the way to single cell organisms we spent most of our history evolving in salt water?
Or is salt a vital part of the chemistry of our body, so even if we evolved in fresh water we would have still needed salty blood?
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