How Breathwork Became The Go-To Tool For Calming Your Nervous System

Stress used to be something we talked about as an inevitable, unavoidable part of life. Now, it feels like everyone is talking about the ways we can unlock our nervous system to better regulate that strain. Breathwork classes are fully booked. People are comparing HRV scores like step counts. Terms like “regulation”, “downshifting”, and vagal tone have gone from niche to normal. There’s a growing recognition that the way we feel day-to-day isn’t just influenced by how much we sleep, train, or eat, but also by giving our nervous system the chance to actually slow down.

Modern life rarely gives it that opportunity. We move quickly from one thing to the next, scrolling, responding, pushing through fatigue and overriding the signals that tell us to pause. Over time, the body adapts to this constant input. Being switched on starts to feel normal and fully relaxing starts to feel unfamiliar.

Breathwork is about bringing attention back to something most of us stopped noticing a long time ago. The way we breathe doesn’t just reflect the state we’re in, it can also change it. Slower, more intentional breathing tells the body that it’s safe to release tension, lower stress, and come out of survival mode. It’s one of the few tools that can shift how you feel in real time, and it doesn’t require anything other than your attention.

To understand why breathwork is having such a moment, and why nervous system regulation is becoming part of so many daily routines, we spoke to breathwork trainer and founder of Breathpod, Stuart Sandeman. He shares why regulation is now a foundational skill, and how learning to use your breath properly can seriously change how you feel every day.

Breathwork is giving people something they’ve lost: control

Part of the reason breathwork for nervous system regulation has gained so much momentum is because it addresses a very real problem. So many of us feel constantly switched on, yet disconnected from any real sense of control over how we feel.

“Breathwork is capturing people’s attention because it gives them something they are missing; agency over their internal state,” says Sandeman. “We’re all living in a constant state of stimulation with artificial light, constant notifications, pressure to perform, endless comparison, and a productivity culture that keeps the nervous system in overdrive. Our physiology simply wasn’t designed for this pace.”

When the nervous system is exposed to constant stimulation, activation stops feeling like a temporary state and starts becoming the norm. People begin to identify with feeling wired, tired, or anxious without realising these are physiological patterns that can be altered or changed.

“Breathwork offers a direct way to influence the autonomic nervous system, shifting the body from a reactive to a responsive state,” Sandeman explains. “In a world that’s externally driven, it’s an internal solution that’s immediate, evidence-based, and free.” This accessibility is a big part of breathwork’s appeal. It removes the barriers people often associate with improving their mental state. There is nothing to buy, nowhere specific to go, and no waiting for results weeks down the line. The shift can begin within minutes.

There is also a growing understanding that stress lives in the body, not just the mind. “People are realising that many so-called ‘mindset issues’ are actually unresolved stress and trauma held in the nervous system,” says Sandeman. “Breathwork gives us a way to work directly with that imprint: stabilising arousal, rebuilding a sense of safety in the body, and creating a more adaptable, responsive state for performance.”

As nervous system awareness becomes more mainstream, breathwork is increasingly seen as a practical skill rather than a wellbeing trend. “More people are learning that breathwork is an effective tool to regulate the nervous system, move through challenges, enhance recovery, and optimise performance,” he adds.

What breathwork actually does to your nervous system

Breathwork is often framed as a relaxation technique, but what’s happening goes far beyond simply “calming down.” The way you breathe directly changes the signals being sent between your body and brain. “At its core, breathwork changes your body chemistry, neural signalling, and nervous system responses,” Sandeman explains. “With so much stimulation, the nervous system needs more regulation.”

One of the main reasons breathing is so powerful is because of its relationship with the vagus nerve — the major nerve connecting your brain with your heart, lungs, and digestive system, and one of the primary pathways involved in calming the body after stress. “Slow, controlled breathing, particularly lengthening the exhale, stimulates the vagus nerve, a key pathway of the parasympathetic system,” he says. “Around 80% of its fibres send information from body to brain, so when your breathing slows, that signal tells your brain: ‘I’m safe.’”

That signal doesn’t just stay in the brain. It triggers measurable physical changes across the body. “This activates parasympathetic nervous system processes, reducing cortisol and adrenaline, lowering heart rate, improving heart-rate variability, and increasing calming neurotransmitters like GABA,” Sandeman explains. “Functionally, that means greater emotional control, clearer cognitive function, and a faster shift from fight-or-flight nervous system response into rest-and-repair.”

This is why breathwork can change how you feel so quickly. By slowing your breathing, you’re not just reacting to calm — you’re actively creating the conditions that allow your nervous system to switch out of stress mode and back into recovery.

The simple breathing techniques Sandeman recommends

One of the most valuable aspects of breathwork is how quickly it can change your state, especially during moments of stress or anxiety. “I always say: If in doubt, breathe out,” says Sandeman. Here are the techniques he suggests starting with.

Why? Lengthening the exhale is one of the fastest ways to activate the parasympathetic nervous system, the part responsible for helping you relax and recover. The longer, slower out-breath sends a signal to your brain that you’re safe, allowing your body to begin releasing tension.

How to do it:

1. Breathe in slowly through your nose

2. Breathe out slowly through your mouth

3. Make your exhale longer than your inhale

4. Repeat for 1–3 minutes

This is the foundation of most breathwork techniques and can be used anywhere, whenever you feel tense or overwhelmed.

Why? This technique helps slow your heart rate and move your body out of a stress state by extending the exhale. “The longer exhale amplifies vagal tone and signals safety to your nervous system,” says Sandeman. Vagal tone refers to how effectively your vagus nerve can help your body relax after stress. When vagal tone is higher, your nervous system can shift out of fight-or-flight more easily. Lengthening your exhale activates this relaxation response, helping your heart rate slow, your muscles release tension, and your body move back into a calmer state. This makes it particularly useful when you feel wired, overwhelmed, or unable to switch off at the end of the day.

How to do it:

1. Inhale through your nose for 4

2. Hold for 4

3. Exhale slowly through your mouth for 8

4. Repeat for 3–5 rounds

Why? “This works quickly because it helps rebalance oxygen and carbon dioxide levels, which often become disrupted during periods of tension. It also helps reopen alveoli in the lungs, the tiny air sacs that can constrict when your nervous system is in a heightened state,” Sandeman explains. It’s especially helpful during high-pressure moments, after difficult conversations, or when anxiety suddenly spikes.

How to do it:

1. Take one deep inhale through your nose

2. Take a second shorter inhale through your nose

3. Slowly exhale through your mouth

4. Repeat for 3–5 rounds

Why? “For sleep specifically, slow nasal breathing before bed reduces sympathetic over-arousal, increases vagal activity, and supports the physiological processes linked to melatonin,” says Sandeman.

How to do it:

1. Breathe slowly through your nose

2. Keep your breathing gentle and steady

3. Continue for 2–5 minutes

These techniques work quickly, but consistency is what creates lasting change. “You don’t need advanced techniques, just keep consistent with a few simple practices,” Sandeman says. “Consistency builds neuroplasticity. This means re-wiring patterns in your brain so your brain and body learn that calm is the correct baseline state.” 

Re-wiring these pathways will make it easier for your nervous system to stay balanced, help you recover faster, and spend less time stuck in a constant reactive cycle.

Why nervous system regulation is replacing hustle culture

Recently, we’re all approaching performance and productivity a little differently. Pushing harder is no longer the only option and the ability to switch off is no longer seen as a weakness. Instead, we’re learning just how important regulation is to reaching our health and wellbeing goals. Rest and recovery are skills that support resilience and longevity.

 “We’ve glorified hustle for years, but true performance isn’t about doing more, it’s about precise regulation,” Sandeman explains. “Without recovery, the nervous system stays in sympathetic overdrive, leading to burnout, impaired decision-making, and reduced adaptability.”

The nervous system cannot stay in a stress state indefinitely without consequences. “Remember, you can’t run from a tiger all day, everyday,” he says. “Down-regulation allows the body to shift into its optimal recovery mode: repairing tissue, balancing hormones, consolidating memory and integrating high-performance learning,” Sandeman explains.

This is why breathwork has become so popular; because if you master regulation, you’ll be able to access deeper recovery, sharper focus, and more sustainable performance, adds Sandeman.

Why breathwork is one of the most accessible tools available

“The breath is universal,” says Sandeman. “It’s the one tool that’s always available, wherever you are. You can regulate your state in a boardroom, locker room, before walking onto a pitch, before a penalty kick.” This makes breathwork uniquely practical compared to other recovery tools, because there’s literally no equipment, no cost, and no barrier to entry. “In a world where mental health resources are stretched, breathwork gives individuals direct, physiological control in real time,” says Sandeman.

How breathwork improves stress, sleep and performance in the long run

Breathwork’s impact on nervous system regulation and mental wellbeing is something we can actually measure. And, so far, the data speak for itself. 

In Breathpod’s 7-Day Nervous System Regulation Challenge, the impact was significant. “Over 2,000 people practiced daily breathwork and reported on average: 48% reduction in stress and anxiety, 47% reduction in sleep issues, 55% reduction in tension, pain and digestive issues, and 56% reduction in brain fog,” Sandeman says. Participants also noticed improvements in behaviour and energy. “The ability to switch off and relax increased by 54%, mood stability by 54%, and energy levels by 49% all in just one week,” he adds.

Some of these effects can happen immediately, especially with short-term, slow, controlled breathing techniques, which activate the parasympathetic nervous system and increases vagal tone, Sandeman explains. As a result, heart rate, cortisol and adrenaline will lower, and heart-rate variability will improve.

When you’re employing these practices regularly, the nervous system becomes more resilient. Just like you go to the gym to get faster or stronger, so too can your breathwork practice reap longer-term rewards. “With consistent practice, breathwork trains your respiratory system and your nervous system in the same way you train a muscle,” he says. “Your baseline state shifts. You’re less reactive, you recover faster, and you can maintain focus and composure under pressure.”

“Breathwork is a whole system of regulation, priming, performance enhancement, and recovery,” he says. “When you make it a consistent practice, you’re literally rewiring the systems that your health, performance, and sleep depend on.” He adds one final point that reflects why breathwork has become such an important skill today. “The way you're breathing will be dysregulating, or regulating your nervous system, and you get to choose which one that is,” adds Sandeman. Essentially, fast, shallow breathing can keep your body stuck in stress mode, while slower, controlled breathing helps it switch into recovery.

Why breathwork matters now more than ever

Breathwork is resonating because it meets the moment we’re living in. More and more, people are recognising that feeling better is not just about doing more, but about giving the nervous system opportunities to recover. Learning how to breathe properly brings awareness back to something that influences every part of how you feel, think, and perform.

Mastering your breath gives you a way to shift your state when stress builds, improve recovery when life feels demanding, and build long-term resilience too. And in a world that constantly pulls your attention in far too many directions, it offers a way to come back to yourself.

Curious to experience these shifts for yourself? You can try Breathpod’s free 7-Day Nervous System Regulation Challenge here. 

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This article is for informational purposes only, even if and regardless of whether it features the advice of physicians and medical practitioners. This article is not, nor is it intended to be, a substitute for professional medical advice, diagnosis, or treatment and should never be relied upon for specific medical advice. The views expressed in this article are the views of the expert and do not necessarily represent the views of Healf