i, I am new to reaching out about my cf but it it time for me to do so. Any help of ANY kind is welcome. I am a 38 yr old male with cf whose lungs are around 40%. My problem is that my doctors and I are really getting into it over exercise levels and oxygen use. They want me to stop pushing so hard(Ireally do push my limits) and start using oxygen. I vehemently disagree, I am twice the age of most cf people I see in hospital yet I am the only one that goes to physical therapy in workout clothes and really puts forth a workout.Everyone else just walks in street clothes, this goes for those on and off oxygen. There is no sweating going on no HARD breathing and they get real mad at me for doing so because my O2 levels don't match they're little charts. This is not how I was taught long ago(at same facility), i was tolod to push it or lose it. I have been busting my ass hard for at least 23yrs this way and now they are pushing me to stop and just accept a lazy non-challenging workout and oxygen. I tried they're workout after my last inpatient visit and I have seen the biggest 1 year drop in capacity ever! And now I am back inpatient again. I have gone back to my workout and won't workout with the therapists and have been feeling better. Any one else run into this problem?? What I say and can prove goes in one ear and out the other with them. Sorry this is so long but I am new to this and I am SO FRUSTRATED. Thank you.