Well, whether or not that's the case for everyone, what Cooper is arguing in the way she's articulating it is that something about this experience that we have, it leads to stress changes to the way our body works. And so things that would work normally, X diet, let's say, doesn't work because of the metabolism changes that stress responses have caused. I don't know if this has 100% been proven, but peer-reviewed studies that have been done have indicated that there might be something to this.