Thank you mns. Like Jim, I live at 4,000'. For years, I never drank enough water, even when I knew I should drink more. This year I really concentrated on drinking some an hour after I started hiking and then every 15 minutes, with the same procedure if still hiking after lunch. I tried to stop drinking an hour before I thought I would be stopping for the day later in my hike, of course by then I might have adjusted to the trip.
I was shaking at night when I walked out of my tent because it was cold, made for poor working conditions.:) The temps the first few mornings got down to 28-30 F.