Fluid intake is important for athletes to prevent dehydration during physical activity. According to the document, athletes should aim to drink regularly during exercise rather than waiting until they feel thirsty. The amount of fluid needed varies depending on genetics, body size, fitness level, environment, and exercise intensity. Sports drinks can help replace lost fluids and electrolytes while also providing carbohydrates, but should be consumed in moderation. Dehydration of just 1-2% of body weight can negatively impact performance, so athletes should drink before, during, and after exercise to stay hydrated.

1. Hydration and Fluid Replacement By Michael Bransfield

3. Fluid Losses From the pictures above it can be seen that in normal everyday conditions water input vs. output is balanced. However during heavy exercise the amount of fluid lost as sweat increases greatly meaning that a larger quantity or fluid most be consumed to recreate a balance. www.extension.iastate.edu/nutrition/sport/images/02.011A.jpg&imgrefur