If you can back that up with a source, please do so. In any case, my point isn't about margins. My point is that you get thirsty if you need to drink more water. With some exceptions, such as old age.
Drinking too much water is harmful. Drinking too little water is harmful. You want a proper hydration balance, and in most circumstances—with several exceptions—this is well regulated by thirst. All of this is well documented and none of this is should be controversial at all.
Drinking too much water is harmful. Drinking too little water is harmful. You want a proper hydration balance, and in most circumstances—with several exceptions—this is well regulated by thirst. All of this is well documented and none of this is should be controversial at all.