ALSO you wouldn't need to prepare, the adrenaline rush from being in the emergancy/fight or flight reflex being activated, is enough where you wouldn't need to prepare becuase your body will ignore feelings of discomfort from working your muscles too hard without stetching ect, also I saw this one show once, in health, where there was a guy who was trapped under a huge rock, while he was rock climbing right? The adrenaline allowe him to actually push the boulder to the side while he was able to get out alive, that sort of superhuman strength is part of the fight or flight reaction. * he did break two ribs and pulled a lot of his muscles in the process though. *
Yea with adrenaline many things can be done, i remember reading an article in where a mom lifted a small car up to save her child i believe. And after you get adrenaline most of the time your going to be sore or tired when it wears of. Atleast thats what happened to me when i got it and woke up the next day.