Dr. John C. Spence spends most of his time relaxing in the Sedentary Living Laboratory in the Faculty of Kinesiology, Sport, and Recreation at the University of Alberta where he is a Professor and Vice Dean. He has expertise in the area of behavioural medicine and research methods. His research focuses on both the benefits and determinants of physical activity and how physical inactivity and sedentary behaviour are related to obesity. Dr. Spence has studied the broad social determinants (e.g., SES) and population physical activity patterns. More recently, he has focused on (a) the physical environment and how it may influence physical activity choices and risk for obesity among both children and adults (e.g., urban form, location of food establishments); and (b) the role of policy initiatives such as tax credits for promoting physical activity. Dr. Spence has a strong background in physical activity measurement, research methods, and ecological models of behaviour and health.