⏱ 6-minute read

There is a nerve running through your body right now that most doctors never mention and most wellness content barely talks about.

It starts in your brainstem, travels down through your neck, branches into your heart and lungs, and reaches all the way into your digestive tract. Along the way it touches nearly every major organ in your body.

It is called the vagus nerve. It may be the single most important factor in how calm, how healthy, and how ‘like yourself’ you feel on any given day.

Once you understand what this nerve does and what it looks like when it is struggling, a lot of things that may have felt random or confusing about your health will suddenly start to make sense.

This is the part that helps explain the ‘missing piece of the puzzle’. Why so often you have tried ‘all the things’ to feel better, but nothing seems to help.

Digestion that feels unpredictable. Bloating, sluggishness after meals, constipation, or the sense that food just sits there — these are classic signs of low vagal tone. Your vagus nerve is supposed to activate the "rest and digest" response that drives healthy gut motility and enzyme production. When it is underactive, digestion is compromised regardless of what you eat.

Anxiety that does not match your circumstances. When your vagal tone is low, your brain does not receive adequate "all clear" signals from your body. It stays in a low-grade scanning mode — scanning for threats and bracing for something. This shows up as a persistent background hum of worry or unease that you cannot quite explain, even on a quiet day.

Sleep that does not restore you. Falling asleep is one thing. But shifting into the deep, restorative sleep stages requires a handoff from sympathetic to parasympathetic dominance — and the vagus nerve is the primary driver of that shift. Low vagal tone means light, fragmented, unrestful sleep even when you get enough hours.

A slow return to calm after stress. One of the clearest markers of vagal tone is how quickly you recover from a stressful moment. High vagal tone means you can move through an argument, a hard conversation, or a stressful situation and return to baseline relatively quickly. Low vagal tone means you stay activated long after the stressor has passed — still tense, still wired, still unable to let it go.

Feeling easily overwhelmed by noise, busy environments, or social situations. The vagus nerve also plays a role in how your nervous system processes sensory input. When vagal tone is low, the world can feel louder, more demanding, and harder to navigate — not because anything is actually wrong, but because your nervous system is already running too hot.

If several of these sound familiar, I want to say something important: this is not a character flaw. It is a physiological state, and it is fixable.

Pick one of these and start practicing it today.

🌿 The physiological sigh

This is one of the most evidence-based breathing techniques for immediate vagal activation, and it takes less than 30 seconds.

Take a full inhale through your nose. At the top of that inhale, take one small extra sniff — a double inhale — to fully inflate the lungs. Then release a slow, complete exhale through your mouth until your lungs are fully empty.

Repeat two to three times.

The physiological sigh works because the double inhale re-opens collapsed air sacs in the lungs, allowing the exhale to be longer and more complete — which is what drives parasympathetic activation through the vagus nerve. Research from Stanford confirms it is one of the fastest-acting self-administered tools for reducing physiological arousal.

Do this before stressful conversations, during moments of overwhelm, and before bed.

🌿 Morning movement — slow and outdoor

A gentle 10–20 minute walk outside in the morning activates the vagus nerve through multiple pathways: rhythmic movement, natural light for circadian regulation, and the breathing rhythm that walking naturally creates. It does not need to be exercise in the traditional sense — it just needs to be consistent, unhurried, and preferably somewhere you can hear something other than traffic and notifications.

Leave your phone in your pocket. Let your nervous system register that the morning does not begin with demands.

🌿 Feet on the earth, hand on the heart

This one is simple enough to feel too simple — but do not underestimate it. Once a day, ideally in the morning, place one hand over your heart and take five slow, complete breaths. Notice the warmth of your hand. Notice your heartbeat.

This practice activates the vagus nerve through diaphragmatic breathing while simultaneously engaging the brain's social-emotional regulation circuits through self-touch. It is a small act of saying: I am here. My body is worth my attention.

Every practice that restores the vagus nerve — the slow breath, the stillness, the morning quiet, the unhurried meal, the gentle walk — requires one thing that our culture makes very hard to come by. A pause from the busyness of life. Long enough to remember that you were not designed to live at a sprint.

"Be still and know that I am God." — Psalm 46:10

The stillness God invites us into is not just spiritual — it is physiological. It is the vagus nerve doing exactly what it was designed to do when we stop filling every moment with noise, urgency, and demand.

God did not design your body to be chronically activated. He designed it to move between effort and rest, between output and restoration. When you practice stillness, you are not being unproductive. You are being obedient to how you were made.

This week's faith practice:

Before you get out of bed tomorrow morning — before you check your phone, before the day's demands — take 60 seconds to lie still. Breathe slowly. Say one simple prayer: "Thank You for this new day. Thank you for this body. Help me take care of it today."

"He makes me lie down in green pastures, he leads me beside quiet waters, he refreshes my soul." — Psalm 23:2–3

If this resonated and you want to go deeper — the full science, detailed breakdowns of evidence-based practices and the research behind it, and complete guides and protocols you can start doing today — that is exactly what is waiting for you inside Root & Restore, my paid subscriber membership. Right now it’s only $11/month.

For less than a dollar a day. Join Root & Restore here →

Your body was designed to thrive. Sometimes it just needs the right building blocks to remember how.

With faith, science, and wellness,
Liz, The Wellness Nurse

Registered Nurse | Certified Mental Wellness Coach

P.S. Did any of this resonate with you? Hit reply and share- I read every response and want to hear from you.

THE WELLNESS NURSE Evidence-Based Wellness for Your Body, Mind & Faith

⚕️ Medical Disclaimer: The content in The Wellness Nurse is for educational purposes only and is not intended as medical advice. Always consult your healthcare provider before making changes to your health practices.