@narelled23 I was much like you until last summer, when I suddenly needed to be on oxygen all the time. I saw the pulmonary people and they didn't seem concerned, but they offered me the rehab, which I declined because it's a long way to drive. I need to get more exercise at home. Also, my oxometer blinks when it is below 85 when I don't seem to be having any unusual symptoms, but then it will jump up to mid 90"s.