Darryn Willoughby, Ph.D., FISSN holds BS and MEd degrees in Exercise Science from Tarleton State University and a PhD in Neuromuscular Physiology and Biochemistry with a sub-emphasis in Nutritional Biochemistry from Texas A&M University. He is a Fellow of the American College of Sports Medicine and International Society of Sport Nutrition (ISSN). He is also the current President of the International Society of Sports Nutrition, and is a Certified Strength and Conditioning Specialist from the National Strength and Conditioning Association and a certified exercise and sport nutritionist from the ISSN. Dr. Willoughby is an internationally recognized scholar and one of the top leaders in the field where his primary research focuses on the molecular mechanisms regulating muscle hypertrophy and atrophy and the effectiveness and efficacy of nutritional supplements in helping to support muscle hypertrophy, attenuate atrophy, and improve exercise and sport performance. He is well published in scientific research journals such as the Journal of Strength and Conditioning Research, Medicine and Science in Sports and Exercise, Journal of Sport Science and Medicine, and the International Journal of Sports Medicine. Dr. Willoughby gives invited presentations at numerous professional conferences regarding sport performance and muscle adaptation to training and nutritional supplementation.