In fact, the cells of our body have a mechanism in place that helps regulate these processes in a reciprocal fashion. And what that basically means is when one process is on, the other process must be off. For instance, if our body for our cells are breaking down glycogen to glucose the process of glycogen synthesis will be turned off. Now, what exactly is this process of reciprocal regulation and how does it actually take place? So let's begin by imagining that our body is either exercising or our body is fasting. In either case, the blood glucose levels in our body will decrease.