I just want some clarification or at least a consensus on appropriate water intake. I'm sure there's an oz/lb ratio out there. Is there a chart on activity level and proper water intake? The reason why I bring this up is, I heard this one doctor saying "drink when you're thirsty, don't overdo it" on NPR the other day. I thought the thirst mechanism was a poor indicator of your ideal fluid needs. Meaning once you're thirsty, you're already dehydrated to the point where it's going to affect your performance. How do you guys judge your water intake? I base mine on the color of my pee: lemonade color = good, apple juice color = bad. I don't know how correct this is. Any thoughts? I feel like there's some conflicting information out there.