Beginning with a discussion on which parts of a diet determine results, the book delves into calorie intake, food quality, meal spacing and timing, and supplement use, rank-ordering them based on their relative contributions to diet so that readers can remain focused and avoid getting needlessly caught up in the minute details. Next the book further explores why and how calories matter; how much protein is enough; whether snacking is a good idea or if intermittent fasting is better. Each of these questions and more are answered, giving the reader the foundational knowledge to understand diet structure. Finally, readers will learn how to design their individual diets. They will be given step-by-step guidelines on how to modify their diets as their bodies adapt. Additional information about hunger management, diet psychology, long-term diet planning is provided all to achieve the best results. Also included are special diet considerations for a vegan diet, training multiple times a day, competition day, endurance sports, and women at different life stages, as well as information on the most pervasive diet myths and why they are wrong. By using the knowledge and tools in this book, the reader is guaranteed to achieve any fat loss, muscle gain, or performance goal.