Shaking Stress Away

I am always looking for new ways for parents to ease stress, particularly when I am working with mothers who have experienced trauma. I recently came across a set of exercises which identify and isolate the psoas muscle – a long muscle that runs from the lower back to the top of the leg.  It seems that when we are in a state of extreme stress or tension we contract the psoas.  Continued tension can lead to a variety of physical symptoms including sleep difficulties, IBS and back pain.

Trauma release exercises http://www.traumareleaseexercises.com.au/ trigger a self-controlled muscular trembling which ameliorates stress deep within the individual.  With continued practice you literally shake yourself better.  Has anyone tried this?