There were some students that spit their saliva out of the windows and spit their saliva out when they were in the classroom. There were also some teachers who were smoking in inappropriate place and some students who were throwing rubbish, such as candies wrap, anywhere. Teachers and students were still having low concern in maintaining the toilet and shower, hence the toilet and shower were still smelly and dirty. This activity was intended to implement "tri dharma perguruan tinggi" and to

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... re the knowledge to other people, especially for students of SMA Negeri 1 Sapuran, Wonosobo. Hopefully, at the end of this activity, the students would realize the importance of implementing clean and healthy living. This service activity was carried out in one day in July 2016, in SMA Negeri 1 Sapuran, Wonosobo, Central Java. The activities of clean and healthy behavior were not pre-tested but had been observed for two months. From two-months observation, there were still lots of food packages scattered everywhere. Therefore, it could be stated that the students of SMA Negeri 1 Sapuran were still lacking of clean and healthy behavior. The method of health education was performed through mass counseling. The students were collected in the hall, given material using Microsoft PowerPoint with lectures as well as discussion. Then, followed by post-test to find out whether the material provided was useful in increasing knowledge and applying clean and healthy lifestyle for students. The service was attended by 159 students. The results of observations on knowledge were still lacking, judging from the post-test results showed an increase in knowledge that was good at 81.8%. The result of clean and healthy behavior that observed within two months after counseling was good, there were not a lot of garbage scattered on the yard.