And what that means is more of that oxygen will be delivered to the tissues of our body. Now, what about something called two three BPG? So two, three BPG is two three biphosphoglycerate. And two three biphosphoglycerate is a naturally occurring intermediate in the process of glycolysis. So we produce two, three BPG when our cells use glucose and break down glucose for ATP. So within our cells that are exercising, they have a high rate of metabolism.