How long do the benefits of the program last? 22 February 2022 01:29 Health benefits are sustained up to three months after completing 3 cycles of ProLon®. Related articles Is there a "transition day" diet after completing five days of ProLon®? Can I extend the fast? Is tea, coffee or infusion allowed during ProLon? How many cycles of ProLon® can be recommended to an individual in a one-year period? How is it possible that I’m eating but still in a fasting state with such a high carbohydrate diet?