Electrolytes are important to the functioning of body on a daily basis. Fluids in the body are balanced with soluble, charged minerals called electrolytes. The body uses this interplay of fluids and charged minerals as the electrical wiring system for energy to flow through the body, to support muscle function and the movement of nutrients (i.e., electrolytes) to the proper places in the body. It's estimated that the average person loses two cups' worth of fluid a day just through breathing. Further, during extreme heat or periods in which the body is perspiring, one rapidly loses fluids and electrolytes. Replacing fluids with electrolytes allows the body to "lock on" to the electrolytes so it can then bring fluids into the system. But, as Val John Anderson and Jeff Burke discuss, don't look to plain water or even sports drink as the solution to your electrolyte needs - instead look to elete Electrolyte Add-In.