And what these hormones basically do is they stimulate the enzyme phosphorase kinase. And remember, phosphorase kinase uses ATP to transform the phosphoralase B which exists predominantly in the inactive T state, into phosphorlase A which exists predominantly in the r state. And what that does is it helps us produce more ATP molecules by breaking down glycogen into glucose and using the glucose in glycolysis to form those ATP. So when our cells are basically exercising that means we have a low energy charge value. We want to produce more ATP because we have a low ATP relative to Amp concentration. The high Amp shifts the equilibrium of his fourlase B to the r state making it more active.