A: Beginners are mainly influenced by the external environment because of imitation psychology, the influence of communication circles and wrong cognition. A heavy smoker relaxes and relieves anxiety by smoking, which is mainly due to his own physiological dependence.

If we further sort out the changes of these influencing factors and make a chart, we will find that: for young people who just started to contact cigarettes, the influence of smoking mainly comes from the external environment, as shown by the blue line, and their physiological dependence on nicotine is basically zero; With the increase of smoking age, especially after the trial period, smoking maintenance period, and then to the degree of nicotine dependence, the influence of external environment gradually decreased, but physiological dependence began to become the main reason.