Why yes, I did roll onto my back during REM sleep right at the end there... how did you guess?
That happens once or twice a week now that I'm finally relaxed and used to sleeping with the mask -- I guess I should probably bump up my max to deal with that. But what's more unusual are all the hours of flat minimum before that. Usually I have enough little snores and flow limitations to keep the pressure wandering around gently between 6 and 8, with a sprinkle of Hs and OAs here and there. But last night was the first time I tried Allegra -- maybe I have finally found the right allergy medicine for me!