Been reading your posts for a while now, trying to find common ground for discussion. My problem is not being able to catch my breath when exerting myself. All my life! Doctors like to say it's because I'm old, smoked for a while, or had this or that job during my life. I'm 72 now and have been told, finally, that it may not be my lungs. I remember kids having to wait for me at the top of hills on their bikes as long ago as second grade. Tired of the Docs blaming me. Been active all my life in spite of it but now my abilities are narrowing a bunch. Due to have some extensive heart related tests soon so maybe I will have some answers then. In the meantime, I've enjoyed reading your posts and wish you all comfort and happiness. Will post if/when I get some answers.