Physical activity is influenced by a variety of factors (personal, social, environmental, and political). Moving from intention to action requires understanding one’s motivation and receiving support. Public policies must not only coordinate stakeholders on the ground across all sectors (schools, businesses, healthcare, recreation, etc.), but also develop support provided by trained professionals. Interview with Anne Vuillemin, professor at the University of Lorraine and researcher at the Apemac laboratory “Chronic Diseases, Perceived Health, and Adaptation Processes: Epidemiological and Psychological Approaches,” Nancy.