I am a reformed smoker and had my last cigarette when I had a heart attack and bypass surgery on July 11, 2002. My conditioning seems to be progressing properly, but I wonder about my wind. I don't necessarily run out of air, but sometimes you can hear me blowing for a mile. Any suggestions about what I need to do to build my wind up. By the way, whether it's my age or the effort I am putting into it, I don't remember running, biking, weight-lifting, etc. as being as painful when I was last in shape? Even though we always talked about "no pain, no gain", I don't know that I ever really hurt like I do now.