Rzepka, A., Radziszewski, K., Kędziora-Kornatowska, K., & Dzierżanowski, M. (2016). Physical activity as a remedy for "cheerful" aging which prevents from chronic diseases. Journal of Education, Health and Sport, 6(13), 183–199. Retrieved from https://apcz.umk.pl/JEHS/article/view/4171