Sodium helps regulate the body's fluid levels by promoting fluid retention, ensuring that water is effectively absorbed and retained by the cells. Potassium is vital for proper muscle function and nerve transmission, including the contraction of muscles involved in hydration regulation. Additionally, potassium helps counteract the effects of sodium, helping to balance electrolyte levels in the body. Magnesium contributes to hydration by supporting energy production and electrolyte balance, ensuring that the body's cells have the necessary energy and resources to maintain optimal hydration levels. Together, these electrolytes work synergistically to replenish hydration, support muscle function, and promote overall well-being.