Making an exercise plan, I think.

So lately it seems that everyone is blogging or talking about exercise and how much it has helped improve their lung function, and I decided it was time for me to get my butt in to shape... better yet my lungs!! For the past year or so my lungs have kinda been on a steady down climb. It is the same routine I get sick, do IV's my pfts pop back up but then a month or so later I start to feel sick again sooooo I figured I should start running and working my lungs out. So far I am thinking about going to the gym about 3 times a week for a couple weeks then maybe step it up a notch. I went today and felt so out of shape. Then my freaking toes cramped up and I couldn't stand on them anymore. Has anyone had that problem??? The gym here at my apartments is really nice. We have a pool to but it's slowly getting to cold to swim much.

Anyways that is the idea I have for getting my lungs back into shape and my numbers where they should be. I am up for any advice or tips that you have. I have never been one to work out so this is all new to me. I'm not ready to be sick and back home and I am not ready to even be at the point of thinking of a lung transplant but my numbers rang between the mid 50's to low 40's and I just want them stable again.