Electrolytes, such as sodium, potassium, calcium, and magnesium, are essential minerals that help regulate fluid balance, nerve signaling, and muscle function. They play a crucial role in maintaining hydration, preventing muscle cramps, and supporting proper heart function. Electrolytes also aid in balancing pH levels and ensuring efficient cellular function. Replenishing electrolytes is especially important after intense exercise, illness, or dehydration to maintain overall health and energy levels.