I quit three months ago and have put on half a stone. Having to curb my eating now to stop it going any higher. On a positive note though, when I'm exercising I can go for longer, have stopped using my asthma inhaler for the first time in years (smoking and asthma - I know, I know!) and my skin has all of a sudden become really glowing. It was never particularly bad but I didn't realise how dull it had become. I used to have a facial every few weeks but have not needed one - my spots have cleared up and my skin is in great condition! Yeah! Now if they put that on the side of cigarette packets...