Premarital sexual relations have a negative impact on adolescents, namely the risk of sexually transmitted diseases, unwanted pregnancies, illegal abortions, and psychological trauma. This study aims to examine the effectiveness of educational videos in preventing premarital sexual behavior in generation Z. Researchers make educational videos and then measure their effect on increasing knowledge and attitudes. The research method is quasi-experimental. The population is grade 12 students at Vocational High School Al-Hidayah, South Jakarta. Samples were taken randomly. The intervention group was given educational video shows. The control group was given oral counseling. The result is that the educational video intervention affects increasing respondents' knowledge. As for the attitude has no effect. Educational videos need to be developed to increase the knowledge of teenagers as Generation Z who are very familiar with visual displays through cell phones that are used almost all the time by Generation Z.
Community service activities carried out within the residents of the Ministry of Health Polytechnic of Jakarta have a positive impact in detecting the risk of stroke for residents. Using a stroke early detection card, namely the Risk Stroke Scorecard, participants can be identified with mild stroke risk, a warning risk, and a high risk of stroke. Based on the results of examinations, measurements, and interviews of 150 participants, it is known that the condition of body weight is almost balanced between ideal body weight (49.3%) with overweight and obese (49.7%), most of them are non-smokers (72, 7 %), most have no family history of stroke (83.3 %), most of the blood pressure is abnormal ( 58 %), most of the heart rate is regular (96.7 %), the state of blood sugar when mostly average (58.7%), most of the cholesterol condition is not normal (60%). The analysis using the Stroke Risk Card showed that most of the participants had a warning stroke risk (48.7%).
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