Thanks Kimmy for the link, I can definitely relate to this. One of the reasons I would fall off the wagon after quitting smoking (approx 5 times) is that I would start to gain weight, even with exercise. My "normal" weight is around 200 lbs (but I should be about 185), when I have quit smoking, I shoot up to about 215 in about a month. The last time I quit was new years 2008, did not smoke (or vape as it was an unknown option) until July 2009 when I was at 225 lbs before I started smoking again. Within a month, I had dropped back down to 215. Started vaping in October 2009 with the crap from Smoking Everywhere, and was able to wean off analogs by Christmas. In that time period I had slightly increased my activity through light periodic aerobic workouts, but when Christmas hit, I put another 5 back on. In January, I switched to the KR808 from Vapor King, and now have a much more consistent and reliable vaping system. As a result, I have been exercising (and vaping) a little more and am down to 200. As previous posts have pointed out, everyone is different, but my experience supports a combination of nicotine and behavior (ie vaping instead of eating) does have a direct impact on metabolism and weight consistency. I am starting to ramp up my aerobic activity, and will start weight training again soon, which will hopefully take care of the rest. In either case, vaping appears to be far easier on the lungs and vastly improves your cardio pulmonary system tolerance to allow vigorous exercise, which analogs significantly restrict. Sorry to ramble, but hope others will benefit. Sure beats coughing up crap when you are trying to work out while addicted to analogs