Nutrition plays a significant role in general health and athletic performance. How the human body functions, improves, and maintains equilibrium depends on a delicate balance of nutrients, biochemical processes, and regulatory systems. While many of the body’s systems and processes cannot be voluntarily controlled, the nutrients ingested and provided to the body can be manipulated. Intake of nutrients, through a variety of methods such as diet, supplements, and portion balance, provides an individualized path to managing how efficiently and effectively the body functions. Nutrition therefore plays a critical role in achieving improved health, weight loss, or improved athletic performance. This book provides an excellent, easy-to-understand resource for understanding how the body digests, absorbs, and uses various nutrients to provide energy and to improve performance and function. This book also discusses different nutrients and nutritional needs through various supplements and diets.