How does hydration affect physical performance?

Hydration plays a crucial role in maintaining optimal physical performance during exercise. When the body is adequately hydrated, it can effectively regulate temperature, transport nutrients, and remove waste products. Water is essential for maintaining blood volume, which is vital for heart function and muscle performance. Adequate hydration helps delay the onset of fatigue, improves endurance, and can enhance overall exercise performance.

With proper hydration, athletes can experience improved strength, increased stamina, and better overall endurance. Conversely, dehydration can lead to decreased performance, muscle cramps, and increased fatigue. Therefore, it's clear that hydration positively influences exercise performance, making the chosen answer the most accurate reflection of how hydration affects physical activity.