Now, if we examine the difference between the lungs and the exercising tissue, so going from the lungs to this point, this point corresponds to value of about zero point 91. So that means 91% of the myoglobin is saturated in exercising tissue of our body. And so 98 -91 gives us a difference of about 7% so this is a tremendous difference. 7% would not be enough for our body to actually create enough ATP molecules and to use the ATP molecules for the various processes. And that's precisely why it's the hemoglobin molecule and not the myoglobin that our body actually prefers as the carrier of oxygen, because it's the hemoglobin that can successfully unload enough oxygen. 21% in this case, and 66% in this case, to our cells of the body.