I have mild late onset asthma and I decided to improve my lung capacity by doing the couch to 5k. I also gave up eating wheat 12 weeks ago and am now on week 6 of Couch to 5k, I feel so much better, no longer wheeze and have lost 10 lbs. I hadn't realised how much of a morale booster this would be for me, asthma symptoms can affect your confidence quite badly - more than I had realised. I am nearly 60 by the way. Would love to hear from anyone with a similar experience.