Seth Creasy, PhD is an Assistant Professor of Medicine in the Division of Endocrinology, Metabolism, and Diabetes. His research broadly focuses on improving lifestyle interventions that help to prevent and treat chronic diseases such as obesity. His training is focused on the theory and practice of doubly labeled water for measuring free-living energy expenditure in humans and physical activity measurement and novel analyses of continuous physical activity accelerometer data. He currently holds an NIH Career Development Award (K01) to investigate how the timing and consistency of lifestyle behaviors (energy intake, physical activity, and sleep) influence weight loss and weight loss maintenance.