Endorphin elevation appears to be an innate physiological mechanism to protect mammals and perhaps other animals against the emotional and physical dangers or terror and pain. It is a survival device, and because it has evolutionary value it probably appeared during the savage period of our prehistory when sudden life-threatening events occurred with frequency. Many a life has no doubt been saved by the absence of panicky response to sudden danger.
( Sherwin B. Nuland )
[ How We Die: Reflections of ]
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