52 years old. Smoked for the best part of 40 years and then had a heart attack back in May - go figure! I have been cleared by the hospital to start C5K and have just finished week 3 though week 4 looks really daunting. I think there is a lot of psychology to how hard / easy the runs feel. I am enjoying other peoples posts here. It would be good to hear from a succesful graduate with a similar health background to mine. I have lost 25lbs in just under 6 months so I am hoping if I can do that I can get through C5K but it really feels like I have done the easy bit and the rest of it looks scary.