It also contains a lot of myoglobin. So these muscles also appear red but they also appear pink. So that means the amount of myoglobin is lower in fat oxidative than in slow oxidative. Now, the major supply of fuel is not fatty acids but it's glycogen. So the polymer version of sugar where we break down glycogen into glucose and then the glucose goes into the process of glycolysis, then into the crept cycle and onto the electron transport chain. So these also contain many mitochondria and many capillaries.