What do all of these involuntary shakes and shivers have…

““What do all of these involuntary shakes and shivers have in common? Why do we quake when frightened or tremble in anger? Why do we quiver at sexual climax? And what might be the physiological function of trembling in spiritual awe? What is the commonality of all these shivers and shakes, quivers and quakes? And what have they to do with transforming trauma, regulating stress and living life to its fullest? These gyrations and undulations are ways that our nervous system “shakes off” the last rousing experience and “grounds” us in readiness for the next encounter with danger, lust and life. They are mechanisms that help restore our equilibrium after we have been threatened or highly aroused. They bring us back down to earth, so to speak. Indeed, such physiological reactions are at the core of self-regulation and resilience. The experience of emergent resilience gives us a treasure beyond imagination. In the words of the ancient Chinese text, the I Ching, The fear and trembling engendered by shock comes to an individual at first in such a way that he sees himself placed at a disadvantage … this is only transitory. When the ordeal is over, he experiences relief, and thus the very terror he had to endure at the outset brings good fortune in the long run.””

— Peter A. Levine