Professor Catherine Sabiston is a Canada Research Chair in Physical Activity and Mental Health at the University of Toronto. She is an authoritative pioneer in interdisciplinary exercise and sport psychology, and is recognized globally for her innovative research in physical activity and mental health. Her exceptional expertise is at the intersection of body image and health. Sabiston improved vulnerable people’s health worldwide by designing sharable programs and measures to substantially improve access to quality physical activity experiences, especially for girls. She is also a tenacious champion of body shape and size diversity in physical activity and mental health contexts.