The best source of hydration during extended physical activity is usually water. It effectively replaces the fluids lost through sweat and helps maintain optimal body temperature. For prolonged sessions or activities with significant electrolyte loss, electrolyte-rich drinks may be beneficial to replenish essential minerals such as sodium and potassium. While sports drinks can be helpful for endurance athletes, plain water often suffices for moderate exercise. Staying hydrated is crucial to prevent dehydration, which can impair performance, lead to fatigue, and adversely affect overall health.