How to calm your nervous system

For people living with chronic pain, nervous system dysregulation is not a side effect — it is central to the experience. Here are six evidence-based practices with the science behind each one, and the honest reality of how I use them myself.

If you live with chronic pain, your nervous system is working overtime.

Not because you are anxious by nature or failing to cope — but because central sensitisation, the underlying mechanism of most chronic pain conditions, keeps the nervous system in a state of persistent low-level activation. It is scanning for threats. Producing pain as a protective response. Keeping you in physiological high alert even when there is no immediate danger and even when you are consciously trying to rest.

This is exhausting. And it is self-perpetuating — a dysregulated nervous system is more sensitive to pain, and more pain creates more activation. The loop continues.

Calming the nervous system is therefore not a wellness extra or a nice addition to pain management. It is one of the most direct, evidence-based interventions available. And it is something you can begin today.

Here are six practices I use — as a BABCP accredited psychotherapist and as a woman living with hEDS and chronic pain myself. For each one I will give you the mechanism, because when you understand why something works, you trust it more — and that trust genuinely enhances the effect.

1. Diaphragmatic breathing —
your fastest available tool

This is the one I reach for first, every time. Not because it is the most impressive thing on this list, but because it is available in any moment, costs nothing, and produces measurable change within minutes.

The science: slow diaphragmatic breathing — where the belly rather than the chest rises — directly activates the parasympathetic nervous system via the vagus nerve. The extended exhale is the key mechanism: a longer exhale than inhale specifically stimulates the parasympathetic response, measurably lowering cortisol, reducing heart rate, and decreasing pain perception. Research confirms these effects within 3–5 minutes of practice.

How to practise: Sit or lie comfortably. Place one hand on your belly. Breathe in through your nose for four counts, feeling your belly rise — not your chest. Hold for four. Breathe out through your mouth for six counts. Hold for two. Repeat for five to ten minutes. The extended exhale is what does the work — do not rush it.

I use this before client sessions, during pain flares when the panic around the pain is making everything worse, and last thing at night. It does not remove the pain — but it removes the physiological terror around it. That distinction is genuinely significant.

2. Progressive muscle relaxation —
for pain and sleep

PMR is one of the oldest evidence-based techniques in psychology, and one of the most underused. It is particularly valuable for people with chronic pain who carry persistent muscular tension throughout the body without necessarily being aware of it.

The science: PMR involves systematically tensing and releasing each muscle group, from feet to face. This teaches the body the felt difference between tension and relaxation — a distinction that becomes blurred when tension is the baseline state. Multiple clinical trials confirm PMR reduces pain intensity, improves sleep quality, and lowers anxiety in chronic pain populations.

How to practise: Lie somewhere comfortable. Tense each muscle group for five seconds, then release completely and notice the difference. Move upward through calves, thighs, abdomen, chest, hands, arms, shoulders, face. Take 15–20 minutes. I do this most evenings, often with lavender diffusing. The combination is particularly effective for sleep.

3. Cold water exposure —
the norepinephrine effect

This is the one that surprises people most — especially coming from a psychotherapist. But the evidence is robust, and my own experience of it is why I swim in the Peak District at 6am several mornings a week.

The science: cold water exposure triggers a significant release of norepinephrine — a neurotransmitter crucial for pain modulation and mood regulation — by up to 300% in research studies. It activates the vagus nerve directly, shifting the nervous system toward parasympathetic activation. With regular practice, cold exposure increases vagal tone: the body's ability to return to calm baseline after stress. The competing sensory input of cold also closes pain gates via Gate Control Theory, producing real-time analgesic effects.

You do not need a reservoir or a river. Ending your shower with 30–60 seconds of cold water provides genuine benefit through the same mechanisms. Start with a few seconds and build gradually. Breathe slowly throughout — the breath is what regulates the experience.

The soul side: cold water forces complete presence. When I am in the water I cannot be anywhere else — not in the pain, not in the to-do list, not in the worry about tomorrow. I am simply here, in this body. For those of us who have learned to dissociate from a body in pain, that return — however brief — is profound.

4. Grounding —
interrupting the pain-anxiety loop

Grounding techniques are deceptively simple and, in my clinical experience, one of the most immediately effective tools available during a pain spike or moment of overwhelm — because they work in seconds and need no equipment.

The science: pain catastrophising — the mind spiralling into "this will never get better" — measurably increases pain perception by amplifying the emotional processing of pain signals. Grounding interrupts this by redirecting attention to present-moment sensory experience, reducing activity in the default mode network (the brain's rumination system) and engaging the sensory cortex instead.

The 5-4-3-2-1 technique: name five things you can see — really look at them. Four things you can physically feel. Three things you can hear, however quiet. Two things you can smell — this is where an essential oil works beautifully as a grounding anchor. One thing you can taste. Move through each slowly. This is not a distraction technique — it is a neurological intervention.

5. Nature exposure —
the cortisol research

"Go outside" is not what most people expect from a psychotherapist. But the research on nature exposure is specific, robust, and directly relevant to the chronic pain population.

The science: time in natural environments measurably reduces cortisol, lowers blood pressure and heart rate, and decreases inflammatory markers. Research on Shinrin-yoku — Japanese forest bathing — demonstrates significant physiological changes after as little as 20 minutes outdoors. The effect is greater for people with higher baseline stress levels, which includes most people living with chronic pain.

You do not need the Peak District — though if you have access to it I wholeheartedly recommend it. A local park, a garden, or sitting near an open window with natural light provides real benefit. Brief, regular exposures are meaningfully therapeutic. This is not optional nature time. It is medicine with a mechanism.

6. Essential oils —
the limbic pathway

I include this because it is the practice most people in clinical circles would expect me to leave out — and because the science behind it is more robust than many people realise.

The science: inhaled essential oils travel via the olfactory nerve directly to the limbic system — one of the only substances to bypass the usual thalamic relay and arrive at the brain's emotional and pain-processing centres rapidly. Lavender's linalool modulates GABA receptors, reducing nervous system activation in the same pathway as anti-anxiety medication. Frankincense contains sesquiterpenes that cross the blood-brain barrier with antidepressant and anti-inflammatory properties. Bergamot acts on serotonergic and GABAergic systems with measurable anxiolytic and analgesic effects. These are not placebo effects — they are specific neurological mechanisms.

Used consistently as part of a daily ritual — diffused, inhaled from the palms, or applied diluted to pulse points — essential oils provide genuine nervous system support. The ritual itself also matters: the deliberate act of choosing something that says "I am caring for my nervous system right now" carries therapeutic value alongside the chemistry. Science meets soul.

"Calming the nervous system is not a luxury or a wellness extra. It is one of the most direct, evidence-based interventions available for chronic pain — and you can begin today."

QUICK REFERENCE → →Diaphragmatic breathing — 5–10 mins daily, extended exhale is the key

→ Progressive muscle relaxation — 15–20 mins, most effective before sleep

→ Cold water exposure — end showers cold, 30 seconds, build gradually

→ Grounding — 5-4-3-2-1 during pain spikes or overwhelm

→ Nature exposure — 20 minutes outdoors measurably reduces cortisol

→ Essential oils — lavender, frankincense, bergamot as daily support

 

Putting it together —
building a sustainable rhythm

None of these practices work as well in isolation as they do used together, consistently, over time. The goal is not a perfect daily routine — it is a rhythm that is genuinely sustainable for your life and your body on the days you actually have.

A simple starting point: one breathing practice in the morning — five minutes, that is all. One grounding technique available for acute moments of pain or overwhelm. One evening practice that signals to your nervous system that the day is over — PMR, an oil ritual, a slow walk outside, or all three if you have the capacity.

Start with what feels most accessible. Add gradually. Notice what shifts — not necessarily in the pain level, but in your relationship with it. That shift, however small, is the beginning of everything.

Want a free guide to take this further?

Download my free Holistic Tools for Emotional Balance and Nervous System Regulation — eight practices in full, with the science and the soul behind each one. Or get in touch to talk about one-to-one support

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Sheena Rydings
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