Magnesium, an essential mineral, plays a crucial role in numerous bodily processes. Its compounds, such as magnesium oxide, chloride, and lactate, aid in maintaining electrolyte balance and preventing dehydration. Magnesium intake is vital for optimal health, as deficiencies can lead to hypomagnesemia, characterized by fatigue, muscle cramps, and nerve damage. Conversely, excess magnesium can cause hypermagnesemia, requiring medical attention. Understanding the role of magnesium in hydration ensures overall well-being.