Muscle Cramps: Fatigue or Electrolyte Deficiency?

Even though pulling a muscle isn't considered life threatening, it still can be a huge pain.Muscle cramping can keep you from exercising, or from reaching any goals that you've previously set for yourself.But, why do muscle cramps happen? Is it from overuse (fatigue) or do you have something a little more serious like an electrolyte deficiency?Listen in as Michael F. Bergeron, PhD, FACSM, shares whether or not your muscle cramping is derived from fatigue or electrolyte deficiencies.