18/11/2025
✨The Vagus Nerve: Why Your Body Can’t Relax When It’s Stuck in Fight-or-Flight
The vagus nerve is one of the most powerful nerves in your entire body. It runs from your brainstem down through your face, throat, heart, lungs, and deep into the digestive organs. Think of it as the main communication highway between your brain and your body—especially when it comes to stress and relaxation.
The Vagus Nerve Controls Your “Rest & Digest” System
✨Your nervous system has two main modes:
🔻Sympathetic Nervous System (SNS): Fight or flight
🔻Parasympathetic Nervous System (PNS): Rest, digest, recover
The vagus nerve activates the parasympathetic side. When it's working well, it helps:
Slow your heart rate ✅
Reduce stress hormones✅
Improve digestion✅
Relax your muscles✅
Regulate breathing✅
Create a sense of calm and safety✅
❓What Happens When the Vagus Nerve Is Underactive?
If the vagus nerve isn’t firing properly, your body struggles to switch off the fight-or-flight response. You can get “stuck” in a sympathetic state, even when there is no real danger.
🔻Constant tension in the shoulders, back, and jaw
🔻Racing thoughts
🔻Trouble sleeping
🔻Shallow breathing
🔻Digestive issues (bloating, constipation, nausea)
🔻Feeling unable to relax
🔻Feeling “on edge” or easily triggered
🔻Fatigue and burnout
Your body isn’t broken—it's trying to protect you, but it stays in protection mode for too long.
❓Why the Body Gets Stuck in Fight-or-Flight
Stress, trauma, poor breathing patterns, pain, chronic inflammation, and even posture can put the body into sympathetic dominance. When this happens for weeks, months, or years, the vagus nerve becomes under-stimulated, and the relaxation system gets weaker.
How to Support the Vagus Nerve ✅
The good news: the vagus nerve responds extremely well to manual therapy, movement, and specific relaxation techniques. Things that help include:
🔻Deep diaphragmatic breathing
🔻Slow exhalation-based breathing
🔻Massage around the neck, diaphragm, and abdomen
🔻Gentle mobility work
🔻Restorative exercise and stress management
A calm vagus nerve = a calm body.
An underactive vagus nerve = a body stuck in stress mode.