Hydration needs during exercise are influenced by various factors, including intensity, duration, and environmental conditions. Higher intensity workout sessions typically increase fluid loss through sweat, necessitating greater hydration to maintain performance and prevent dehydration. Similarly, longer exercise durations require more fluid intake to compensate for fluid loss over time. Additionally, hot or humid environments can elevate sweat rates, further increasing hydration demands. Individual factors such as body weight and personal sweat rates also play a crucial role in determining specific hydration needs. Thus, understanding these factors is essential for effective exercise performance.