Although not the human body’s preferred source of energy, degradation of amino acids can be used for energy under conditions such as fasting or starvation. This process can be classified as ketogenic or glucogenic. Ketogenesis is the process where proteins are broken down into ketones, soluble lipids that be use for energy. Glucogenesis converts proteins into pyruvate which can converted into glucose. Epinephrine the neurotransmitter of the “fight and flight” is involved in glucogenesis.