Nutritional system optimization is the process of improving dietary patterns and nutrient intake to support the body’s biological functions. This field emphasizes nutrient timing, balance, and adequacy, aiming to enhance performance, recovery, and resilience to stress. Optimizing nutrition is crucial for athletes, aging populations, and individuals with specific health goals, as it involves tailoring diet plans that align with each person's physiological demands. Techniques like nutrient partitioning and functional meal planning are applied to optimize metabolic efficiency and body composition. Nutritional system optimization is essential for personalized nutrition, where the focus is on creating dietary strategies that maximize health, support chronic disease management, and improve overall quality of life.