I was the same, smoked back for about 2 years before I gave up so like you didn't save much. Plus after giving up for about 6 months I decided to smoke blow, and ended up smoking about 10 roll up size joints a day!!! Cheat? Me? Never! Good luck with it, I did everything right, drank diet juice, kept freak veg stick in the fridge, took up knitting to keep my hands busy, I still managed to put on loads of weight, as I think somehow smoking affects your metabolism. Not that putting it on is your problem, and if you carry on working out regularly it oughtn't be an issue. You will be so much healthier though, it is definitely worth it x