There is a difference between salt you add to food for taste and electrolytes, which are a group of chemicals that are part of the balanced body salts that aid normal functions.Originally Posted by Iceman123
Dehydration is more than just fluid loss.
The sweat comprises fluids containing essential body salts. Loss of these essential salts can cause problems. Not so much at our level but you can see distance runners taking specially formulated drinks when racing.
I take the powdered electrolyte drink after cycling in the tropics just as a precaution against cramps caused by dehydration and electrolyte loss.