As shown in the question above, protein breakdown releases the amino acids that make it up. These amino acids become free amino acids. These amino acids cannot be stored, so they can be quickly expelled from the body (when they are in excess and will not be necessary), they can also be degraded through oxidative degradation that will allow them to be reused in the manufacture of other proteins, or they can also be used as source of energy when the individual has been in court for a long time.