HI! I am 25 w/CF. I was wondering what type of exercise everyone did to keep thier lungs strong and healthy. I have lung surgery back in 1996 before I was diagnosed and it seems so hard to get back in shape to where I was. I had a membership at the YMCA and went several times a week, but that got hard with working fulltime. I try to walk and bike ride at home, but I want to start running again. So I bought a treadmill last week. Any other suggestions on keeping strong. Also, what do people do to keep thier arms strong. I have had a few picc lines and the doctor said my veins were small and I needed to lift weights. Has anyone tried this and does is work? Thanks!