Great plan on your Non Smoking program, Matthew. The running will definitely cause a dumping of toxins that will speed your healthy recovery but will expose you to a bit of the toxic side effects. Keep up your running and make a trip to your local health food store. A good anti oxidant and some very specific homeopathic products can make give you some relief on the cravings and the side effects of cleansing your system. Go to a locally and reputably run health food store not a chain. You usually get better educated people and certainly people who have the community at heart; it's in their interest as a citizen and it's good business.