The psoas (The muscle of the soul) runs deep through your core, connecting your spine to your legs and weaving through your pelvic and abdominal diaphragms. It quietly shapes how you stand, breathe, and feel. When it tightens, your breath shortens, your pelvis contracts, and your nervous system stays alert, believing danger is still near. Over time, this becomes a record of survival, storing what your mind couldn’t process. This is what we call A.C.I. Trauma: Ancestral: the fears you inherited.