Stop in for a cup of coffee

Yes, I see my Doc every 3 months for a "well" visit. My blood pressure is well controlled and has been for 12 years. I'm in very good health in general, low cholesterol (155) good BP (140/78) and good blood sugar (a1c 5.8).

This is one that just came out of nowhere. I had no idea that I was running in a semi-dehydrated state and nothing indicated it. But, as I have learned, no one ever knows they are until something pushes them over the edge...like what happened to me.
Ok, I apparently missed something here.