J. ANDREW DOYLE, Ph.D., FACSM, is an Associate Professor of Exercise Physiology and the Director of the Applied Physiology Laboratory in the Department of Kinesiology and Health at Georgia State University, where he formerly served as the Department Chair. He received a B.S. in Zoology from Clemson University, an M.S. in Exercise Science from Georgia State University, and his doctorate in Exercise Physiology from the Ohio State University. He has taught exercise physiology, exercise testing and fitness assessment, and exercise programming at the undergraduate and graduate level for over 20 years. His research interests include carbohydrate metabolism and exercise and the role of physical activity, exercise, and fitness in health. He has conducted, published, and presented numerous research studies with cyclists, runners, and triathletes, and has extensive experience testing elite athletes from cycling, running, gymnastics, rowing, canoe and kayak, and basketball. Dr. Doyle is a Fellow of the American College of Sports Medicine.