the bad thing about a/c

My bedroom is upstairs.  Our air system is yet imperfect, so when the rest of the house is, say 75 degrees, our room can be 77.  So I have to keep tabs on the air-conditioner to make sure it isn't set at 82 or something.  And the bad thing is, it automatically resets to 82 at 11:00.

But a few nights ago, the a/c was pumping and it must be dry air that it pumps because my lips were drying out and then my upper lip sort of popped open--a little sore.  And it developed into a canker sore!  And now there's another one or two that have sprung.

Whenever I am beset by canker sores it gives me such an appreciation for a mouth that doesn't hurt.  Sort of like when I lose my voice or get a cold.