Chris Lovato, Allison Watts, and Derrick Lee are with the School of Population and Public Health, University of British Columbia, Vancouver, British Columbia. K. Stephen Brown and Mary Thompson are with the Department of Statistics and Actuarial Sciences, University of Waterloo, Waterloo, Ontario. Catherine Sabiston is with Exercise and Health Psychology, Department of Kinesiology and Physical Education, McGill University, Montreal, Quebec. Candace Nykiforuk is with the Centre for Health Promotion...