Electrolytes recharge your life.
I learned a long time ago that we needed salt. The history books talked about salt caravans traveling across the desert and about salt mines. Old war movies showed soldiers putting salt tablets in their canteens. Salt was used to preserve food, like salt beef, salt pork, and salted cod. Every good farmer puts out a salt lick for his animals. Animals will travel miles for salt. Without salt there is no life.