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. And on top of that, we have the hormones that stimulate this enzyme to transform phosphorase B into phosphorase A which automatically exists predominantly in the r state. And so we're going to break down glycogen much more readily into glucose to actually form ATP via glycolysis. Now, conversely, we can also have a high energy charge value.