I can tell you that I smoked for over 13 years. I quit 15 months ago, and have never looked back. Before, I was a pain to climb steps, now I'm running 3-4 miles a night and doing heavy lifts. I would say to anyone who smokes, that there is no benifit from it, you will die one day (probably caused by it) and it's a waste of money. Cold turkey is the best way to go!