Dr. Sibley holds degrees in exercise science, physical education, and sport and exercise psychology. He is also an NSCA Certified Strength and Conditioning Specialist and CrossFit Level 2 Trainer. He has been a member of SHAPE America since 2003 and currently serves on the editorial board for the Journal of Physical Education, Recreation and Dance (JOPERD). Dr. Sibley has published and presented numerous papers on physical activity among children and adults, in particular addressing motivation for physical activity and the relationship between physical activity and cognitive performance. In his leisure time, Dr. Sibley enjoys exercising, outdoor activities, cooking, and spending time with his wife and two children.