But at the same exact partial pressure for our curve that contains the two three BPG, we have a value of about 60% saturation of hemoglobin. And the fact that we have less saturation of hemoglobin in our red blood cells that contain the two three BPG. That basically means more of these hemoglobin molecules are not actually bound to the oxygen. And so more oxygen is unloaded into the exercising cells of our tissue. So when our metabolic rate inside the tissue increases, they require more oxygen to actually produce ATP. And that's exactly why the two three DPG interests the red blood cells in the first place to stimulate our deoxy hemoglobin to not actually bind to the oxygen, so that more oxygen is allowed to travel into the cells of the exercising tissue.