@thumperguy Don, Interestingly enough, if you read Daniel Pecaut's book Beating Bronchiectasis (which I have read twice now but it was a year or two ago) there was one of his "team" that told him it was very important to breathe through the nose and not the mouth even when exercising (that's a trick). I've always remembered that ever since I read that book. It, of course, has scientific reasoning behind it but I can't remember what it was. And there was also a Russian doctor back in the 20's or 30's that believed that people with chronic diseases (and I don't remember if it was lung specific or any chronic disease) had been mouth breathers all their life. I know I was and have been a mouth breather because of sinus issues but now I'm trying to breathe more through my nose. One day I will find that video about that doctor. He was obviously shunned by the medical community but I believe there's something to it. Nan