Electrolytes are the chemicals that fire the muscles.

Electrolytes are the chemicals that fire the muscles. When we have a good balance of the five electrolytes in our systems, our muscles fire smoothly and consistently. When we do not have enough electrolytes, particularly sodium, no matter how tough we are, how much we want it, or how hard we work, our bodies will lose the ability to function over time. The most common signs of dehydration include cramping, dull headache, light headedness, fatigue and often a feeling of having to pee, but not being able to produce any pee.