Good morning! Are there any former smokers here that are now Run Disney enthusiasts? I have a question for you. I quit smoking in 2012 and have been training for my 1st 5k which I did yesterday. I have had no issues running on the treadmill indoors at the gym with my breathing/lungs but after about 5 minutes of running outside yesterday my lungs were on fire and I couldn't catch my breath. I've been coughing off and on since yesterday and it feels like I just quit smoking again! Is it running/exercising outside vs inside that irritated my lungs? Does this eventually go away? Any suggestions? I'm assuming spend more time outdoors exercising/running is going to be the answer.