Polyvagal Theory and Trauma: Understanding What’s Happening in Your Nervous System

If you’ve experienced trauma, you may sometimes feel anxious for no clear reason. You might shut down during conflict. You may feel disconnected from your body, exhausted, or constantly on edge — even when you logically know you’re safe.

If this sounds familiar, there is nothing “wrong” with you.

Polyvagal Theory, developed by neuroscientist Stephen Porges, helps explain why your body reacts the way it does after trauma. It offers a compassionate understanding of how your nervous system works — and how healing can happen.

This article is written for you: to help you understand your responses, reduce shame, and offer hope.

Trauma Lives in the Nervous System

Trauma is not just a memory stored in your mind. It is an experience stored in your nervous system.

When something overwhelming happens — especially if you felt helpless, alone, or unsafe — your body adapts to survive. Your nervous system learns to detect danger quickly. Sometimes, it becomes very good at it.

The challenge is that long after the danger has passed, your body may still respond as if it hasn’t.

You might:

• Feel anxious in situations that seem objectively safe

• Become easily overwhelmed

• Struggle with sleep

• Shut down emotionally

• Feel numb or disconnected

• React strongly to tone of voice or facial expressions

These responses are not character flaws. They are survival strategies your body developed to protect you.

Your Nervous System Has Three Main States

Polyvagal Theory explains that your autonomic nervous system operates in three primary states. These states are not choices — they are automatic responses designed to keep you alive.

Understanding them can help you make sense of your experience.

1. The Ventral Vagal State: Safety and Connection

When your nervous system feels safe, you enter what’s called the ventral vagal state.

In this state:

• You feel calm and grounded

• You can think clearly

• You feel connected to others

• Your breathing is steady

• You feel present in your body

This is the state where you feel like “yourself.”

If you grew up in a consistently safe and supportive environment, this state may feel familiar. If you experienced trauma, especially early in life, this state might feel unfamiliar — or even uncomfortable.

Sometimes safety itself can feel strange.

2. The Sympathetic State: Fight or Flight

When your nervous system senses danger, it shifts into fight or flight.

Your heart rate increases. Your muscles tense. Stress hormones surge. You may feel:

• Anxiety

• Panic

• Irritability

• Anger

• Restlessness

• Racing thoughts

This response is not a weakness. It is your body preparing to protect you.

If you live with chronic anxiety or hypervigilance, your nervous system may be spending a lot of time in this state — even when there is no immediate threat.

Your body is trying to keep you safe. It just hasn’t yet learned that the danger is over.

3. The Dorsal Vagal State: Shutdown or Freeze

If fight or flight doesn’t resolve the threat, your system may shift into shutdown.

This can feel like:

• Emotional numbness

• Exhaustion

• Disconnection

• Brain fog

• Feeling heavy or collapsed

• Depression-like symptoms

You might struggle to get out of bed. You might feel distant in relationships. You might say, “I just don’t feel anything.”

This, too, is a protective response.

When escape feels impossible, the nervous system conserves energy and numbs sensation. It is not laziness. It is biology.

Why You React Before You Think

Have you ever asked yourself, “Why did I react like that? I know I was safe.”

Polyvagal Theory introduces the concept of neuroception — your nervous system’s automatic scanning for safety or danger.

This happens below conscious awareness.

A tone of voice. A facial expression. A sudden noise. Even silence.

Your body reacts before your thinking brain has time to interpret the situation.

That’s why you can understand something logically but still feel anxious or shut down.

You are not overreacting. Your nervous system is responding to perceived threat based on past experience.

Trauma and Relationships

If you’ve experienced relational trauma — especially in childhood — connection itself can feel complicated.

You might:

• Crave closeness but fear vulnerability

• Become anxious when someone pulls away

• Shut down during conflict

• Misinterpret neutral expressions as rejection

• Feel overwhelmed by emotional intimacy

Your nervous system may have learned that relationships are unpredictable or unsafe.

This can create cycles in adult relationships: pursuing and withdrawing, reacting and shutting down, longing for connection but fearing it at the same time.

When you understand that these patterns are nervous system responses — not personality defects — something begins to soften.

At Being and Becoming Counselling and Wellness Services, we often help clients explore these relational patterns through a nervous-system lens. Instead of asking, “Why do I keep doing this?” we gently explore, “What is my body protecting me from right now?”

That shift can be transformative.

Healing Is About Regulation, Not Perfection

Healing from trauma is not about eliminating anxiety forever. It’s not about never shutting down again.

It’s about building flexibility.

A regulated nervous system can move between states without getting stuck. You might feel anxious — but return to calm. You might feel overwhelmed — but not collapse into shutdown.

In therapy, much of the work involves helping your nervous system experience safety consistently enough that it begins to trust it. At Being and Becoming Counselling and Wellness Services, this often means moving at a pace that feels manageable, building stabilization skills first, and ensuring you feel supported every step of the way.

How Counselling Helps Your Nervous System

Trauma-informed counselling focuses on creating safety in your body, not just insight in your mind.

Here’s how that often works:

1. Co-Regulation

Your nervous system can calm in the presence of another regulated person.

When your therapist speaks in a steady tone, maintains warm facial expressions, and responds with attunement, your body receives cues of safety.

Over time, your system begins to internalize that experience.

If you didn’t consistently receive co-regulation growing up, therapy can become a new template for safety.

2. Learning to Notice Your States

Instead of “What’s wrong with me?” the question becomes:

• What state is my nervous system in right now?

• Am I activated?

• Am I shutting down?

• What does safety feel like in my body?

This shift is powerful.

You are not anxious. Your system is activated.
You are not broken. Your body is protecting you.

Language matters.

3. Supporting Regulation

Simple practices can support your nervous system, such as:

• Slow, steady breathing

• Gentle movement

• Grounding exercises

• Humming or singing

• Safe social connection

These are not quick fixes. They are ways of building capacity.

The goal is not to force yourself to calm down. It is to offer your body experiences of safety — again and again.

Your Nervous System Is Adaptable

One of the most hopeful truths about your nervous system is this: it can change.

Through neuroplasticity, your brain and body can form new patterns. With repeated experiences of safety, your system can begin to distinguish the present from the past.

You may start to notice:

• Less intense reactions

• Faster recovery from stress

• Greater emotional range

• More comfort with connection

• A deeper sense of steadiness

These changes often happen gradually. Healing is rarely dramatic. It is built in small moments of regulation and connection.

A Compassionate Reframe

If you carry shame about your reactions, consider this:

Your nervous system adapted to survive.

If you are hypervigilant, it’s because at some point vigilance was necessary.
If you shut down, it’s because shutdown protected you.
If you struggle in relationships, it’s because connection once felt unsafe.

Your symptoms are not evidence of failure. They are evidence of resilience.

Now, in a safer present, you can gently help your body learn something new.

Moving Toward Safety and Connection

Understanding Polyvagal Theory gives you a map.

It explains why your body reacts the way it does. It normalizes your experience. It reduces shame. And it offers hope.

Healing is not about forcing yourself to be different. It is about building safety — internally and relationally — until your nervous system begins to trust that you are no longer in danger.

If you are seeking support, working with a trauma-informed counsellor can help you build this sense of safety at a pace that respects your nervous system. At Being and Becoming Counselling and Wellness Services in Burnaby, BC, the focus is on helping you move from survival toward connection — gently, compassionately, and collaboratively.

You are not broken.

Your nervous system has been protecting you.

And with the right support, it can learn that you are safe enough now to live — not just survive.