Like the kind of exercises you are involved into the environment that you are in, what is your overall health perceptions, and if you are on any medication or something. So all these things determine the amount of water that you should consume to keep your body in a healthy position. So now we also have another important question that is water the only option for staying hydrated? No, definitely not. You don't need to rely only on water to meet your fluid needs
And then after having food, you shouldn't consume water just enough so that your throat doesn't feel dry, but not a complete glass of water as such after food because it causes a lot of indigestion issues. And likewise, there are different time in the day that we have to space how we should consume water and how many glasses we should consume and that alters from person to person. For some people, even a small quantity of water is just fine and for some it's large