I'm pretty sure people have been drinking water for millennia and everyone was fine without constantly carrying water bottles around.

It's almost like our bodies have evolved a way of telling us when we are starting to get dehydrated. I think we should call this feeling "thirsty".

So the best thing to do is to listen to your body and drink some water when it's telling you you're "thirsty". There's really no need to force yourself to drink when you're not thirsty.

An oracle once told me that "a mere 1% to 2% drop in total body water triggers the sensation of thirst."