I have always been fascinated with muscles and what they hold in our body... I have read about the Psoas muscle, regarding the article and what else I have read, it seems that this is a fairly common muscle to be tense, tight, neglected, and to be connected to past UDINs and stress. From my experience with myself and all my clients and countless others, muscle tension and  tightness and pain in general are common, and how often is the pain connected to the psoas? and how does the average person figure that out?
The article states that if the psoas is left in a stressed state, it can continue to cause pain and issues with movement, flexibility, and sexual intercourse.
Question:  Can the psoas keep the UDIN emotional energy regardless of what emotional conflict/theme it was? 
Or is the psoas tension and tightness connected to a self-devaluation theme only or does it have to be there in conjunction with another conflict if present?
The article stated that any new stressors can create additional tension and the psoas remembers what it learned in the original UDIN, feeling attacked and having to "harden my shell".

Emily Francis has written an interesting book about the muscles called The Body Heals Itself, How Deeper Awareness of Your Muscles and Their Emotional Connection can Help You Heal