Hydration plays a vital role in regulating body temperature during physical activity. Adequate fluid intake helps prevent overheating, as sweating is the body’s primary cooling mechanism. When the body loses fluids through sweat, hydration levels drop, and temperature regulation becomes less effective, potentially leading to heat-related illnesses. Maintaining proper hydration supports blood circulation and nutrient transport, further enhancing overall performance. It is crucial to drink fluids before, during, and after exercise to ensure optimal hydration, particularly in hot and humid conditions.