Mikaela Shiffrin, a World Cup ski racer, has found that giving up carbohydrates can lead to a physical and mentally exhausted body, but this is rare for her, as she operates somewhere between energized and exhausted throughout the season. She credits her unusual behavior to a constant cycle of travel, competition, recovery, and repeat, which leaves little room for reset. Despite her lack of preparation, she maintains a balanced diet and consistency. Her focus on her nutrition has evolved since she was younger, focusing more on the food she consumes. She has seen this shift shift in fuel management, especially around training and competition, and has found it easier to cut out carbs and less work. She believes the connection between carbs and performance is clear and immediate impact on her performance.