DRINK WATER. OFTEN.
Especially when you are training people to do your job. You tend to
talk, a lot. It takes way more energy than sitting there doing
nothing. The super air-conditioned spot where you sit has the "added
advantage" of wicking all tell-tale moisture off you before you
sweat. DRINK WATER. The goal is 1/2 a liter here, you failed,
MISERABLY. FOR TWO DAYS.
If you go without enough water for a couple days your kidney will
wake you up around 12:30 AM to let you know YOU HAVE BEEN BAD ABOUT
Your insides will remind you what you felt like 11 years ago when you
thought you would die BECAUSE YOU WERE NOT DRINKING ENOUGH WATER and
Jill would have called you a "dumb ass" by now. AND SHE'D BE RIGHT.