Allostatic Balance

http://en.wikipedia.org/wiki/Allostatic_load

"It is used to explain how frequent activation of the body's stress response, an essential tool for managing acute threats, can in fact damage the body in the long run. Allostatic load is generally measured through a composite index of indicators of cumulative strain on several organs and tissues, but especially on the cardiovascular system."

“Allostasis refers to the process of maintaining stability in the course of responding to challenge and reflects an understanding of health as a capacity for adaptation. Allostatic load consists of the cumulative somatic and psychic burden of repeatedly responding to challenge. This includes not only the total effects of chronic stress but also the genetic, developmental, and environmental factors that condition the effectiveness of adaptive responses to challenge. A rapidly growing body of medical research now confirms the extent to which the capacity for adaptation is conditioned by the interdependence of experience mediated by the CNS, the endocrine system, and the immune system.” pg 42 from Peter Hershock

This is the precursor to PTSD. Preventing PTSD or resolving it, is dependent upon ones ability to perceive and work with Allostatic Balance and Allostatic Load.