I have COPD, and have been on oxygen for 5years and 3 weeks and 26 days, I got off of it yesterday. No longer hooked up to a cannula and 25 ft tubing. 24/7. Between MCF, BTD, prayer, immunnics, motivation, positivity thinking and inspiration thoughts and readings. Since last Augst went from a wheel chair to a walker to a cane to being cane free. Am also pain free. (I was on vicodin for severe arthritic pain. There was no air flowing through the right lower lobe of my lung, know there is. All I could say is I am HAPPY, I'm high on life right now, and feel I will be completely healed. I hope this will help you in your life endeavers.