Anatomy: What Is The Ilio Psoas Actually?
The ilio psoas is not just any muscle. It's the deepest core muscle of your body. You can't feel it on the surface — it lies hidden, deep in your torso.
There are two parts:
- Psoas Major: Connects your lower back (vertebrae T12-L5) to your thigh bone (femur). This is the primary hip flexor.
- Psoas Minor: Not everyone has this. It's a smaller, more superficial muscle that's absent in about 40-60% of people.
Together they form the ilio psoas — a muscle that connects your diaphragm to your hip joint. Literally: your breathing and your movement are intertwined.
Functions of the ilio psoas:
- Hip flexion (lifting leg)
- Torso stabilization
- Breathing support (via connection to diaphragm)
- Posture and balance
But here's where it gets interesting: the ilio psoas is also a primitive muscle. It's one of the first muscles that develops in the womb. And it's one of the few muscles directly connected to your autonomic nervous system — the part that regulates fight/flight/freeze.
👉 Place your hand on your hip right now. Do you feel tension? Breathe toward it — not to change it, but to feel it. What do you notice?
Why Trauma Stores In Your Hips
This is not a metaphor. This is physiology.
When trauma happens — an accident, abuse, loss, chronic stress — your body stores it. Not just in your "head". But in your tissues. In your muscles. In your nervous system.
The hips — and specifically the psoas — are a storage facility for emotional tension. We know this now, thanks to neuroscience and somatics.
Why the hips specifically?
- Evolutionary: The psoas is a primitive muscle — active in embryos, essential for survival.
- Anatomical: The psoas connects your upper body to your lower body. It's a bridge between your "thinking" and your "doing".
- Nervous system: The psoas is directly connected to your sympathetic nervous system (fight/flight). Chronic stress = chronic psoas tension.
- Limbic system: Emotions are processed in your limbic system → signals to your muscles → tension stores in the psoas.
Liz Koch, pioneer in psoas research, calls the psoas the "muscle of the soul". Not because it literally contains your soul. But because deep emotions — fear, shame, sorrow, anger — are held in this muscle.
Taoist traditions have known this for thousands of years. The hips are the center of your life energy (chi, prana). When the hips are stuck, your energy is stuck.
And when you open the hips? Energy releases. And with energy… come emotions.
👉 Try Constructive Rest Position now (see exercises below). 5 minutes. Feel what happens — without judgment. What comes up?
Exercise 1: Constructive Rest Position (CRP)
Duration: 5-10 minutes
Safety: ✅ Safe for everyone
How:
- Lie on your back
- Knees bent, feet on floor (hip-width)
- Arms relaxed beside body
- Let gravity work — don't force
- Breathe naturally, feel your hips sinking
Why it works: Neutral position, psoas can relax without stretch, nervous system calms.
Exercise 3: Supported Bridge
Duration: 3-5 minutes
Safety: ✅ Safe with support
How:
- Lie on your back, knees bent
- Place block/cushion under your sacrum (not under lower back!)
- Feet hip-width, arms relaxed
- Let hips sink onto support
- Breathe into your chest → psoas relaxes
Why it works: Gentle hip opening + vagus nerve stimulation (chest breathing).
Exercise 5: Gentle Psoas Stretch
Duration: 2-3 minutes per side
Safety: ⚠️ Don't force, stop if emotions arise
How:
- Standing, step left foot back
- Right knee bent (90 degrees)
- Hands on hips or above right thigh
- Gently push left hip forward (not too deep!)
- Exhale: gently deepen, inhale: length
Why it works: Direct psoas release + grounding (standing).
Healing The Psoas: A Journey, Not A Destination
The ilio psoas is not something you "fix". It's something you get to know. A friend. A guide. A mirror of your nervous system.
When you release the psoas, you don't just release tension. You release your history. Your survival patterns. Your old stories.
And that's not a one-time thing. It's a journey. A journey of feeling. Of breathing. Of trusting.
Your nervous system learns: I am safe. I may relax. I may be.
And the psoas? It follows. Slowly. Gently. Step by step.
👉 Next week: a blog about nervous system regulation after psoas release — how to integrate what comes up. Do you want to read it? Sign up for our newsletter.
Warm regards,
Tessa and Luna, on behalf of Spiriators
