But before we take a look at the details of stage one, let's actually discuss what each stage actually does. So what's the point of stage one, stage two and stage three? Well, stage one basically aims to trap that glucose molecule inside the cytoplas on the cell so that the glucose cannot actually leave that cell. And it also destabilizes that glucose molecule, increases its overall energy and that makes it more reactive, and that prepares the glucose for stage two. Now, in stage two, we break down that destabilized glucose molecule into two components. And then in stage three, we essentially take those two components, we oxidize those two components and that allows us to actually harvest the energy in those molecules and form ATP molecules, as well as pyruvate molecules and NADH molecules.