And you know, that brings me to the Question of, I find it amazing that how we perceive an event and whether or not we chose to be in that event or not, can have such incredible, eat different effects on circuitry of the brain, and circuitry of the body and biology of cells. And in some ways. It boggles my mind. Like, how can a decision made presumably with the prefrontal cortex? Although other parts of the brain as well. How can that change essentially? Ali. The polarity of a response in the body and I mean you've talked before about type A personalities and that we don't have to go into all the detail there for sake of time but it is interesting that the effects of endothelial cells. I mean, literally of the size of of the portals for blood are in opposite direction depending on whether or not somebody wants to be in a situation as a highly motivated person. Maybe you could just give us the top Contour of that because I think it really Illustrates this principle so beautifully. And then maybe if you would, you could just speculate on how the brain might have this switch to turn. One experience from terrible to beneficial or from beneficial to terrible. It's really fascinating.

Well, all you need to do is like tonight before you're going to sleep and you're lying in bed, and you're nice and drowsy, and your hearts beating nice and slow. Start thinking about the fact that you know, that heart isn't going to beat forever and imagine your toes getting cold afterward and imagine the flow of blood coming to a halt and all of you clotting. And if you're, if you're going to be doing something with your physiology, at that point, that 99% of mammals out there, only do if they're running frantically and you're going to be turning on your synthetics response with thought, with emotions with memory in the measure of That is just how much the cortex and the limbic system sends projections down to all the autonomic Regulators in the brain. You can think autonomic regulatory neurons into action in ways that lie, other animals can do with like extremes of environmental circumstances, given that, and the autonomic role in the other Big Challenge in understanding. It is gigantic and Visual differences and that's him. You talked about the optimal amount of stress that counts as stimulation and in general that stress that not too severe and doesn't go on for too long and there's overall in a benevolent setting and under those conditions. We love being stressed by something unexpected and out of control and predictability like really interesting. Plot turn in the movie. You're watching. That's great, but you could be Visual differences that somehow has to accommodate the fact that for some people the perfect stimulatory amount of stress, is like getting up early for an Autobahn bird-watching walk next Sunday morning. And for somebody else, it's signing up to be like a mercenary in Yemen and tremendous individual differences that swamp any simple, you know prescriptions.