


Exercise
Because quitting smoking slows the metabolism, getting some form of daily exercise is very important. To combat excess weight, shoot for at least a half hour of exercise, 5 days a week. It doesn't have to be a high intensity aerobic workout - a brisk 30 minute walk around your neighborhood will work wonders. Exercise is also a great way to beat cravings to smoke. If you're having a bad day, get out for a walk. It'll clear your mind and improve your attitude.
Healthy Snacks
Put snacks together ahead of time so that when the munchies hit, you've got good food choices within easy reach:
Avoid Alcohol
Not only is alcohol high in calories, it can be a huge trigger to smoke. For many people, smoking and drinking go together like a hand in a glove. Avoid the empty calories in alcohol, but more importantly, don't put yourself at risk of relapse by drinking early in your quit.
One Challenge at a Time
People who quit smoking often decide it's time to clean their lives up in other areas as well. That's great, but be careful. If you try to do too many self-improvement projects at once, you run the risk of failing at all of them.
Keep these points in mind:
Weight can be lost, lungs cannot.
Reference : http://quitsmoking.about.com/od/weightgain/a/weightgainquit.htm