Many people smoke just because of social factors without thinking about the bad effects it will have on their bodies, especially the respiratory system. Many teenagers smoke just because of social factors without thinking about the bad effects that will happen to their bodies, especially their respiratory system. The research method used was true experimental design using randomized pretest-posttest control group design. The results of the study using the Wilcoxon test showed that the two groups both showed significant results, namely p = 0.00