Eric S. Rawson, PhD, FACSM, is professor and chair of the Department of Exercise Science at Bloomsburg University, Pennsylvania. He earned his PhD in exercise science from the University of Massachusetts, Amherst where he studied under the direction of Dr. Priscilla Clarkson. He is a certified strength and conditioning specialist from the National Strength and Conditioning Association. Dr. Rawson's research focuses on the interactions between nutrition and skeletal muscle. In particular, Dr. Rawson has studied the effects of dietary supplements on muscle function. Stella Lucia Volpe, PhD, RD, LDN, FACSM, is professor and chair of the Department of Nutrition Sciences at Drexel University, Philadelphia, Pennsylvania. Her BS in exercise science is from the University of Pittsburgh. Dr. Volpe earned her MS in exercise physiology and her PhD in nutrition, both from Virginia Tech. She is also a certified exercise specialist from the American College of Sports Medicine and a registered dietitian. Dr. Volpe's area of research is in obesity and diabetes prevention, as well as in sports nutrition.