So if we ingest protein, we break down the protein, and that's where we get those amino acids. But under starvation conditions, we can actually obtain the amino acids by breaking down our own proteins found in a skeletal muscle tissue. And in that case, we actually deteriorate the skeletal muscle by breaking down the protein. But we can use those amino acids that we obtained by the breakdown to basically form glucose molecules. Now, certain amino acids are transformed into pyruvate, and so they enter gluconeogenesis as pyruvate molecules. Some of them can actually form DHAP molecules, and so they interguineogenesis as DHAP molecules and eventually produce the glucose that our cells actually need for energy for ATP creation.