Hydration needs differ between men and women due to variations in body composition and metabolic rates. Generally, men tend to have a higher percentage of lean body mass, which requires more water for hydration. Additionally, men's increased perspiration during physical activity can lead to greater fluid loss. Women typically have higher fat content, which requires slightly less water to maintain hydration levels. Factors such as exercise intensity, climate, and individual health conditions also influence hydration requirements, making it essential for both genders to adjust fluid intake according to their activity levels and bodily needs.