Three main mechanisms influence smoking, the first one is positive reinforcement, which is related to the release of acetylcholine, norepinephrine, serotonin, and GABA in the nervous central system caused by the action of nicotine that reduces appetite, improves mood and concentration and generate feelings of pleasure. The second is negative reinforcement, which generates the maintenance of cigarette use to prevent the symptoms of withdrawal symptoms like anxiety, increased appetite, dysphoria, irritability and difficulty in concentrating. The third is the respondent conditioning, which is stimulated by environmental factors, negative emotions and positive that lead to the act of smoke. Thus smoking is a complex behavior that is related to lifestyle, while trying to quit smoking many individuals experience symptoms of withdrawal syndrome which is a major cause of relapse. Deep breathing technique is cited by smokers as a strategy to alleviate these symptoms abstinence.