On the other hand, we saw that the shape for our hemoglobin curve was a sigmoidal shape. And this, this describes the cooperative behavior of hemoglobin. So even though hemoglobin has a lower affinity for oxygen than myoglobin, hemoglobin is able to bind oxygen in a cooperative fashion. And that's exactly why our body prefers to use hemoglobin as the carrier and the transport of oxygen inside our body. Now, that discussion was a more qualitative approach. Now let's take a look at a more quantitative approach as to why our body actually uses hemoglobin instead of myoglobin as the transporter and carrier of oxygen from the lungs to the tissues of our body.