Now in its Second Edition, this text provides a strong foundation in the science of exercise nutrition and bioenergetics and explains how these principles work in the real world of human physical activity and sports competition. This edition has separate, detailed chapters on nutrition recommendations for physically active persons and recommendations geared specifically to those in intense training and sports competition. Case study activities in each chapter involve readers in specific nutritional assessment problems. The book addresses current issues such as low-carbohydrate diets, obesity, various food pyramids, and the special needs of children, the elderly, and pregnant and lactating women.