Carb cycling is an advanced dietary strategy that involves planned periods of higher and lower carbohydrate intake. The goal is to maximize the benefits of carbohydrates—like fueling performance and replenishing glycogen—on training days (high-carb days) while improving insulin sensitivity and enhancing fat burning on rest or lighter days (low-carb days). This calculator helps you structure a weekly carb cycling plan by setting your calories and macros for both high and low days.