Now, because carbonic acid is a relatively good acid, it will dissociate into H plus ions and bicarbonate ions. Now, the H plus ions will create part of the Bore effect. And so they will bind on special regions onto hemoglobin, and that will decrease the affinity of hemoglobin for oxygen, allowing hemoglobin to unload even more oxygen molecules to the exercising tissue. So remember, we have oxygen molecules moving from the red blood cells into this area, then into this area, and eventually that makes their way into the cells of the exercising tissue. Now, what about the bicarbonate ions? Well, bicarbonate ions are simply another form of the carbon dioxide.