Brent Ruby received his Ph.D. in exercise science from the University of New Mexico in 1994. Dr. Ruby served as the Director of the Human Performance Laboratory at the University of Montana from 1994-2007. He is now the Director of the Montana Center for Work Physiology and Exercise Metabolism (Montana WPEM), a designated research center on the University campus and a fellow of the American College of Sports Medicine (ACSM). Dr. Ruby’s research interests include nutritional strategies during ultra-endurance work/competition, muscle metabolism during and after exercise, the use of stable isotope tracers for the measure of water turnover and energy expenditure, and issues surrounding heat stress during arduous work. Dr. Ruby and the Montana WPEM research staff work to facilitate a better understanding of applied human physiology using laboratory and field study designs. The centers facility is well equipped and dedicated to the unique study of arduous work physiology and the metabolic demands placed on the skeletal muscle as it interacts with changing environments.