Ronald Ross Watson, PhD, is Professor of Health Promotion Sciences at the University of Arizona, Mel and Enid Zuckerman College of Public Health. Dr. Watson began his research in public health at the Harvard School of Public Health as a Fellow in 1971 doing field work on vaccines in Saudi Arabia. He has done clinical studies in Colombia, Iran, Egypt, Saudi Arabia and the United States which provides a broad international view of public health. He has served in the military reserve hospital for 17 years with extensive training in medical responses to disasters as the chief biochemistry officer of a general hospital, retiring as a Lt. Colonel. He is a distinguished member of several national and international nutrition, immunology, and cancer societies. Dr. Watson's career has involved studying many lifestyle aspects for their uses in health promotion. He has edited over 100 biomedical reference books and 450 papers and chapters. His teaching and research focuses on alcohol, tobacco, and drugs of abuse in heart function and disease in mouse models. William D. "Scott" Killgore, Ph.D., Professor of Psychiatry, Psychology, and Medical Imaging at the University of Arizona (UA). He recently joined the faculty at UA from his previous position as an Associate Professor of Psychology at Harvard Medical School and Research Psychologist at McLean Hospital. Dr. Killgore is Director of the Social, Cognitive, and Affective Neuroscience (SCAN) Laboratory at UA where he leads a large team of researchers focusing on using functional and structural neuroimaging techniques to understanding the brain systems involved in emotional processes and cognitive performance and how these brain-behavior systems may be affected by environmental and lifestyle factors such as insufficient sleep, nutrition, light exposure, physical activity, and stimulants such as caffeine. His current research is funded by several grants from the Department of Defense with the aim of addressing critical performance and mental health needs of active military personnel and returning combat veterans. He is also funded to conduct research into the development and application of novel on-line training and therapy programs reducing psychological problems such as depression and enhancing emotional intelligence skills. In addition to his civilian job, Dr. Killgore is also a Research Psychologist in the U.S. Army Reserve, with over 15 years of military experience, and served five years on active duty at the Walter Reed Army Institute of Research where he studied the effects of sleep deprivation on cognition, mood, judgment, and decision-making.