And that means only about 1% of that myoglobin has successfully unloaded that oxygen into the tissue. And that's a very, very small amount. It's simply not enough for those cells in the resting tissue to actually use the oxygen to create enough ATP. 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.