GDAs enhance the utilization of blood glucose. This means that these products can help shuttle carbs to aid in muscle growth rather than contributing to fat mass.
There are many uses for a GDA: It can be used with your cheat meal to shuttle the carbs and fat to your muscles for use rather than fat storage. It can be used during a bulking phase to more efficiently use the calorie surplus for muscle growth instead of fat growth. It can be used during a cutting phase to use the low amount of calories for muscle growth while further depleting the fat cells.