So they both have to be able to metabolize glycolysis glucose in the process of glycolysis. And in fact, skeleton muscle cells and cardiac muscle cells actually use ISMES in the process of glycolysis. So remember a specific type of enzyme that we spoke of previously. So we discussed lactate dehydrogenase and we said that lactate dehydrogenase is an enzyme that is basically involved in glucose metabolism. And more specifically, what it does is it transforms pyruvate into lactic acid, it reduces pyruvate into lactic acid and that at the same time oxidizes NADH into NAD plus. And what that allows us to do is it allows us to regenerate NAD plus.