Post traumatic stress disorder starts out with nightmares, flashbacks and actually reliving the event. And this happens over and over and over and over in your mind. If you let it go on, it can become chronic and become hard if not impossible to treat.
I idolized all of the bodybuilders who came from that old-school hardcore era. Those guys didn't need any fancy equipment; they trained with intensity and focus, regardless of the gym or other limitations. These guys could do presses with pails full of cement and still get a great workout.