How your body handles hydration is more complex than most people understand, and it is a balance between fluid levels and electrolyte levels. The advice to just drink until you pee clear to light yellow only gives a first order approximation, do that too much and you can actually suffer from electrolyte loss and become quite sick or die. Drink too much too fast and your tissues can't absorb it no matter how dehydrated you are, you just end up pissing out the excess along with the electrolytes you need to stay properly hydrated. Most people can't absorb more than about half a liter an hour on the high end. Nor is there a magic formula as to how much to drink each day because it depends on numerous factors.
i guess your a doctor......so should you drink things like Gatorade then water when it's and i'm sweating my ass off working?....or just change back and forth?