Importance of Electrolytes. The electrolytes -- sodium, potassium, calcium, magnesium, and phosphate -- carry electrical charges that are responsible for stimulating muscles and nerves. They also regulate the number of fluids throughout your body, which affects cellular function, blood volume, and blood pressure. The electrolytes also help your body absorb water better, so it aids in re-hydration after a hard workout. ctmartialarts.com thedojonewtown.com