Interesting information that you have found. I have heard this before, but needed to be reminded. So, I thank you. Many fasting experts believe that during water fasting, we should drink water according to thirst only, but who knows the experts could be wrong. It wouldn't be the first time. After all they are only human. Maybe if a person is dehydrated during a fast they should drink more water than according to thirst. Some people are not dehydrated because they eat food that has a lot of water in it, fruits and vegetables, so therefore, when they fast maybe they should only be the ones drinking water according to thirst. I am not an expert so I don't know. I am just giving my thoughts.