Quitting smoking all at once is beneficial to the body, but since certain substances in tobacco can be addictive, a few people may experience withdrawal syndrome when quitting, which in turn may show phases of emotional reactions or somatic reactions. Since nicotine and other components in tobacco can lead to addiction, withdrawal syndrome may occur when quitting smoking. Quitters may experience transient emotional reactions such as depression, nervousness, irritability, anxiety, and irritability. Quitters may also experience a series of physical reactions, such as fatigue, dizziness, headache, nausea, vomiting, coughing, chest tightness, palpitations, chills, fever, insomnia, and so on. In the long run, quitting smoking is not bad for the human body, and during the quitting period you can distract yourself by eating snacks and other ways to help quit smoking successfully.