Which statement about hydration is true?

Hydration plays a critical role in maintaining various bodily functions, and one of its most vital functions is regulating body temperature. During physical activity and especially in warmer environments, the body generates heat. To manage this heat, the body uses sweat; as sweat evaporates from the skin, it cools the body down. Adequate hydration ensures that there is enough fluid available for perspiration, helping to prevent overheating. Additionally, hydration supports other essential functions, including nutrient transport and joint lubrication.

The other options do not accurately convey the holistic nature of hydration. While hydration is indeed important during exercise, it is necessary throughout the day to support overall health. Similarly, while watery meals can contribute to fluid intake, they should not be relied upon solely to meet hydration needs. Finally, hydration is crucial for everyone, not just athletes, as everyone benefits from proper fluid intake for optimal health and bodily function.