The ketogenic diet can impact physical performance by altering the body's primary energy source from carbohydrates to fats. This low-carb, high-fat diet aims to induce ketosis, a metabolic state where fat is used for fuel. While some individuals may experience improved endurance during prolonged activities, others might face challenges with high-intensity workouts due to the reduced availability of quick energy. Adaptation to the ketogenic diet varies, making personal response crucial for athletic performance.