Potassium and magnesium are two essential minerals, they act as electrolytes in the body and are essential for normal muscle function. Deficiency can cause seizures and lead to impaired performance. When you perspire a lot you lose these minerals that must be replaced through the diet. Potassium is also essential for nervous system function and body fluid balance. A formula with organic potassium and magnesium bonded to natural citric acid is one of the most absorbable mineral forms.