Sport Nutrition, Fourth Edition, presents the principles and rationale for current nutrition guidelines for athletes and provides an in-depth look at the science behind sport nutrition. Using a physiological basis and a visually compelling color format showcasing 40 new infographics, the fourth edition showcases important concepts, methods, and research findings. This edition features online access to references, appendixes, and glossary terms and definitions, providing useful explanations and at-a-glance information. New topics in this edition include the following: How to recognize good versus bad information about sport nutrition, The role of gut microbiota and how this microbiome is affected by diet and exercise, The function of macronutrients and micronutrients in relation to exercise performance, Guidelines to limit gastrointestinal problems during exercise, Electrolyte replacement during exercise in the heat, Effects of exercise and nutrition on immune function and health outcomes, Low energy availability and the causes and consequences of relative energy deficiency in sport (REDs), More than a simple prescription of recommendations. Sport Nutrition, Fourth Edition, offers a systematic presentation of the science supporting current nutrition guidelines. It is an ideal book to provide a comprehensive understanding of nutrition as it relates to sports, exercise performance, training, and recovery. Ancillaries for adopting instructors are available online.