The first time I visited Denver I walked around a lot and was very confused why I felt hungover when I hadn’t been drinking. I was living in Louisiana at the time, which is at sea level and very humid!

Your specific circumstances don't change the general rule, which is that for most people and under most conditions, hydration status is correctly balanced by thirst. There are indeed exceptions, such as when getting older, which I addressed in my initial comment.

I live about a thousand feet above you.

I notice very few effects of "under-drinking". So yeah, not everyone has the same needs.

On the flip side, I was working outdoors in the sun all day today, and probably ended up drinking about 2 gallons of water without needing to pee much. So not everyone has the same needs even on a day to day basis.

> I live about a thousand feet above you.

I’ve also lived extensively over 9,000ft in altitude. Are we getting into a height pissing contest? If so, why?

Just drink water. Fucksakes.

You're the one who opened with a statement about elevation, presumably to note that it made a difference, somehow. Fucksakes.