What is the Nervous System (And why does it run my life?)

This post is part of a 5-part series designed to help you understand your nervous system and how it shapes your thoughts, feelings, and responses. You can explore the full Nervous System Series here: As you move through each post, you’ll begin to recognise your own patterns and learn how to support yourself with more ease and compassion.

Welcome to Authentic Living Coaching.
I’m Linda Codlin, Transformational Life Coach.
Welcome, my friends.

Week 1: Understanding Your Nervous System

If you have ever felt too sensitive, too reactive, too emotional, too shut down, too anxious, too much — or not enough — this month is for you.
Many of us have spent years trying to fix ourselves. Trying to be calmer. Trying to think more positively. Trying to push through. Trying to override what our body is doing.

Before we talk about stress, trauma responses, or why your body does what it does… I want to begin with:
Nothing is wrong with you.

What if your body is not the problem?
What if it has been protecting you all along?
This month we are not trying to become calm.
We are learning how to feel safe.
And safety is something your nervous system understands deeply.

Your Nervous System Is Not Dramatic. It Is Protective.

Let me say something that might interrupt the story you have been telling yourself:
Your nervous system is not dramatic.
It is protective.

If your body reacts quickly, strongly, or unexpectedly… it is not because you are weak, broken, or “too much.”
It is because you are wired for survival
Your nervous system’s primary job is protection.
Your nervous system does not care about appearances
It does not care if your reaction feels inconvenient or embarrassing. It doesn’t wake up in the morning asking, “How can I embarrass her today?

Its only job is to ask one question:

“Are we safe?”

Every tightening of your chest.
Every rush of adrenaline
Every flush of heat.
Every moment of shutdown.
Every urge to control, fix, run, please, or disappear.

These are not character flaws. They are protective strategies.
These are your body attempting to guard you.

The problem is not that your nervous system activates. The problem is that many of us have never been taught how to help it settle again.
We are not trying to become calm.
We are learning how to feel safe.

A Simple Explanation of the Nervous System

Your nervous system is your body’s communication network.
It includes your brain, your spinal cord, and a vast web of nerves running throughout your body — like electrical wiring in a house.

The brain gathers information.
The spinal cord delivers messages.
The nerves carry signals to and from your organs, muscles, and senses.
This system is constantly scanning, processing, and responding — far faster than conscious thought.

Most of what it does happens automatically.
You do not tell your heart to beat or your lungs to breathe.
In the same way, you do not consciously choose many of your stress responses.

They are built-in protective programs.

Survival Wiring: We Detect Danger First

Human beings evolved to detect threat before anything else.
Safety was never assumed — it had to be verified. So, your nervous system scans for danger first and relaxation second.
This is not negativity. It is design. If there is even a small signal of risk — a tone of voice, a facial expression, uncertainty, conflict, rejection — your body may shift into alert.
It would rather be wrong about danger than miss it.
This is why small things can create big reactions.
Your body is not overreacting; it is prioritising survival.
We are not trying to eliminate this wiring. We are learning how to reassure it.

Thinking vs Reacting

There is a difference between thinking and reacting — and reacting is faster.
Reaction happens in the body before the thinking brain fully catches up. You may snap, freeze, over-explain, go quiet, overwork, or suddenly feel anxious — and only later realise what happened.
That gap is important
The nervous system fires first.
Thought comes second.
This is why logic alone rarely settles stress.
You cannot “reason” with a smoke alarm while it is blaring. You have to show it that there is no fire.

Why You Can “Know You’re Safe” But Not Feel Safe

This is one of the most confusing experiences for many people.
You can logically know that you are safe — the bills are paid, the relationship is stable, the room is quiet — and yet your body feels tense, braced, unsettled.
That is because the nervous system does not respond to intellectual facts. It responds to perceived threat signals.

Think of it like an early alarm system.
Your body has a highly sensitive smoke detector. It does not wait for flames; it reacts to smoke. Sometimes it even reacts to burnt toast. It would rather alert you unnecessarily than fail to warn you. When that alarm goes off, your body mobilizes — heart rate shifts, muscles tighten, breath changes. You might consciously know there is no fire. But until the nervous system registers safety, the alarm continues.

This is why the goal is not to “be calm.” The goal is to teach the body that the fire has passed. We are not trying to become calm. We are learning how to feel safe.

Food for Thought: Notice the Alarm

I’d like you to try something small.
At some point today, notice when your body reacts.
It might be subtle — a tightening in your stomach when you read an email.
A shift in your breath during a conversation.
A sudden urge to rush, fix, withdraw, explain, or defend.
Instead of correcting yourself… pause.
Place a hand somewhere on your body.
And quietly ask:
“Is my nervous system trying to protect me right now?”
No judgement.
No fixing.
No forcing calm.
Just noticing.
Then ask a second question:
“If this reaction is protection… what might it be protecting me from?”
This is not about analysing your childhood.
It is about building awareness.
We are not trying to become calm.
We are learning how to feel safe.

Safety begins with noticing.

If all you take from this week is this — let it be enough:
Your body is not working against you.
It has been trying to protect you in the only ways it knows how.
The reactions that confuse you, frustrate you, or exhaust you are not random.
They are organised. Intelligent. Protective.

And when you begin to see them that way, something softens.
Not because everything suddenly becomes calm.
But because you stop fighting your own wiring.
We are not trying to become calm.
We are learning how to feel safe.
Next week, we will explore the specific protective patterns your nervous system may be using — fight, flight, freeze, and fawn — and why they make more sense than you think.

Until next week: Be kind to yourself as you notice your nervous system’s protective strategies.
oxox Linda

---

Share Your Reflections

You might like to take a few moments to notice what stood out to you as you read.
What are you becoming aware of in your body, your thoughts, or your responses?
You may find it helpful to gently observe this over the next few days — patterns often become clearer with time and awareness.
If it feels supportive, you’re invited to reflect a little more deeply here:

👉 Share your reflections (this opens a short reflection form)

---

If You’d Like to Explore This Further

If something in this stirred recognition, and you feel curious about understanding yourself more deeply, you’re warmly invited to take the next step.
I offer a free 30-minute introduction to coaching — a gentle, no-obligation space to meet, ask questions, and sense whether this work feels right for you.

👉 Book a free 30-minute introduction

---

You can explore the full series below, moving at your own pace.

Looking Ahead:

• Week 2: Fight, Flight, Freeze & Fawn: Understanding Trauma Responses
• Week 3: What It Feels Like When Your Nervous System Is in Defence Mode
• Week 4: How to Soothe the Nervous System (Without Forcing It)
• Week 5: Living Differently When Your Nervous System Feels Safe

---

As a certified Life Coach, I help you to help yourself, so you can create a well lived life your way. 

If what I am sharing resonates with you, follow me, reach out, share with a friend, like or leave a message below,

When you are ready to make a transformational difference in your life, contact me for a one on one coaching session.