Physical activity is considered a fundamental element for health promotion, also during adolescence, contributing to the psycho-physical well-being of the individuals. Here we evaluate the relationship between risk behavior and physical activity habits of adolescents and their parents.A total of 220 subjects (115 females, 105 males), aged between 14 and 18, were asked about their own and parents' physical activity habits and tobacco, alcohol, and light drug consumption. The chi-square test was used to detect differences between males and females. Categorical principal component analysis and Spearman's correlation were used to find associations between the variables analyzed.Our results show a prevalence of an active lifestyle of 52.3%, with no significant gender differences. The consumption of tobacco, alcohol, and light drugs was 28.2, 63.2, and 16.8%, respectively, with a higher prevalence in males and correlated with age. We found a positive correlation between physical activity practice and parents' physical activity, especially between mothers and daughters. Finally, male physical activity practice is inversely related to risk behaviors.Our findings underline the importance of family and parental involvement in promoting health behaviors, such as physical and sports activities, that can represent a powerful educational tool for the prevention of social dangers.