Electrolytes play a vital role in maintaining fluid balance and supporting nervous system function during endurance sports. They help regulate muscle contractions and nerve signaling, preventing issues like cramps and fatigue. As athletes sweat during prolonged activities, they lose electrolytes such as sodium, potassium, and magnesium, which must be replenished to maintain optimal performance. Dehydration and electrolyte imbalances can lead to decreased stamina and increased risk of injury. Therefore, adequate intake of electrolytes, through hydration and supplementary sources, is essential for those engaged in long-duration sports.