I think you hit the nail right on the head. I believe there has been research with rats on this type of thing (sorry I don't remember the name of the study). Th

I think you hit the nail right on the head. I believe there has been research with rats on this type of thing (sorry I don't remember the name of the study). The sort of 'ambiguous' stress of modern life is much harder on the body/mind than say, being chased by a tiger.