How Stress Really Works in Your Body

— and What You Can Do About It

We often think of stress as a mental game, and I’ve done my share of mindset development and identity coaching over the years. The body and mind are different access points to change.

While training to be a breathwork and resilience trainer, I realized I wasn’t walking my own talk. I was still trying to think my way out of stress. Now, years later with more somatic tools, I see stress hygiene as important as brushing my teeth. I proactively support my well-being with body-based tools so there is less “build-up.”

At the core, this is nervous system-oriented work — which in my experience has helped reduce feelings of anxiety, disconnection, and being in constant overdrive. It’s not just about mindset or willpower. It’s biology.

Here’s how stress neurobiology works.

Your Body Sends the First Signal — Not Your Brain

When something feels off — an email, a tone of voice, a loud noise — your body often reacts before your brain has fully processed it.

This process is referred to as neuroception, a term coined by Dr. Stephen Porges as part of Polyvagal Theory. It describes how the autonomic nervous system continually monitors for cues of safety or danger, below conscious awareness.

In less than a second, your body can respond by shifting into:

Fight or Flight (sympathetic activation)
Freeze or Shutdown (dorsal vagal immobilization)
Social Engagement (ventral vagal connection)

That tight chest, shallow breath, or foggy brain? These sensations are part of your autonomic nervous system’s survival response. It’s doing its job — trying to protect you.

📚 Reference: Porges, S. W. (2011). The Polyvagal Theory: Neurophysiological Foundations of Emotions, Attachment, Communication, and Self-regulation. W. W. Norton & Company.

The Triune Brain & Why Logic Goes Offline

Ever freeze in a meeting or snap when you didn’t mean to? That’s where the triune brain model (MacLean, 1990) offers insight. While simplified, it’s a useful metaphor:

Reptilian brain (brainstem & basal ganglia): survival instincts
Limbic brain: emotion and memory
Neocortex: logic, language, empathy

When stressed, blood flow can shift away from the prefrontal cortex toward older brain regions. This makes it harder to access reasoning, perspective, or even words in the moment — a normal part of the body’s threat response system.

This is one reason why cognitive tools like reframing or positive thinking may not be sufficient when you’re activated. Somatic approaches offer another access point.

📚 Reference: MacLean, P. D. (1990). The Triune Brain in Evolution: Role in Paleocerebral Functions. Springer.

The Biology of Safety: It’s Not Just “Feeling Calm”

We are not biologically wired for unrelenting stress. Yet in modern, high-performance work cultures — including corporate environments in Zurich, Basel, or Zug — the body can remain in sympathetic or dorsal states long after the actual stressor has passed.

The concept of the Window of Tolerance (Siegel; Ogden) helps explain this: it refers to the physiological bandwidth in which we feel capable, connected, and resilient. Burnout, chronic stress, or even prolonged multitasking can shrink this window — making it easier for everyday pressure to push us outside of it.

Key point: Safety is not just the absence of threat. It’s the presence of regulation and connection — to your breath, your body, your environment, or another person.

📚 Reference: Siegel, D. J. (1999). The Developing Mind.
📚 Reference: Ogden, P., Minton, K., & Pain, C. (2006). Trauma and the Body: A Sensorimotor Approach to Psychotherapy.

Regulation Is a Skillset to Build — Like Personal Training

This is where tools like somatic coaching, NARM (NeuroAffective Relational Model), and nervous system awareness practices can be supportive. Unlike top-down mindset work, these approaches start from the bottom-up — helping individuals notice physiological states and work with them intentionally.

As Dr. Peter Levine, founder of Somatic Experiencing, puts it:

“Trauma is not what happens to us, but what we hold inside in the absence of an empathetic witness.”
(Levine, 1997, Waking the Tiger)

Interoception — the awareness of internal body sensations — can help you recognize when you’re outside your range of regulation. In early stress recovery, exteroception (awareness of external cues) — such as noticing temperature, texture, sound, or light — may be a helpful entry point.

This is where nature-based practices, including forest bathing (Shinrin-yoku), can offer measurable shifts in autonomic function. Studies have found that exposure to forest environments is associated with reductions in cortisol levels, heart rate, and increased parasympathetic activation.

📚 Reference: Park, B. J., Tsunetsugu, Y., et al. (2010). The physiological effects of Shinrin-yoku (taking in the forest atmosphere). Environmental Health and Preventive Medicine, 15(1), 18–26.

Burnout Is Not a Personal Failure — It’s a Biological and Systemic State

Burnout is recognized by the World Health Organization as an occupational phenomenon — not a medical condition — arising from chronic workplace stress not successfully managed. It’s not about weakness. It’s your system doing its job under long-term overload.

The good news? Neuroplasticity means our stress response can adapt over time. You can build the biology of safety — one small practice at a time.

That’s what I teach: how to work with your nervous system, not against it.

Whether you’re a team leader navigating pressure, a parent in a cycle of exhaustion, or a high-achiever ready to stop white-knuckling through life — this work meets you where you are.

Disclaimer: This article is intended for educational purposes only. It is not a substitute for medical advice, diagnosis, or treatment. The approaches described — including somatic coaching, nervous system education, or forest bathing — are non-medical wellness practices and do not replace care from a licensed healthcare provider.

If you are experiencing chronic health symptoms or psychological distress, please consult with a qualified medical or mental health professional.