What happens to them in the case that we have many, many ATP inside our body? So in this case, these pyruvate molecules or lactic acid molecules are transformed back into glucose and then the glucose is stored in a form we call glycogen. And the process by which we transform these pyruvates and lactic acid molecules back into glucose is known as gluconeogenesis. So glucose means glucose, neo means new molecules, and genesis means the formation. So the formation of these new glucose molecules by using the pyruvate or the lactic acid molecules. Now we see that glycolysis breaks down the glucose, but gluconeogenesis uses these byproducts to reform that glucose molecule.