What You Need to Know About Your Nervous System
If you’ve been feeling anxious, overwhelmed, or constantly “on”… there may be more going on beneath the surface.
Chronic stress can shift how your brain and body function over time– impacting your emotions, energy, and overall well-being.
So that feeling of being stuck, exhausted, or “not enough” might not be something you can think your way out of.
It may be your nervous system asking for something different.
Why You Feel This Way (And Why It Makes Sense)
It might look like you’re doing well on the outside.
You’re showing up to work, staying on top of responsibilities, thinking things through, doing what needs to get done.
But internally, it feels different.
Your mind doesn’t really slow down.
You find yourself replaying conversations, anticipating what’s next, or feeling like you should be doing more– even when you’re already doing a lot.
And when you finally have time to relax, your body doesn’t seem to follow. You feel restless, on edge, or mentally “on,” even in moments that are supposed to feel calm.
Nothing is technically wrong, which almost makes it more confusing. You might find yourself wondering, “Why can’t I just relax?” or “What’s wrong with me?”
What if this isn’t a personal failing, but a nervous system that’s been stuck in a state of activation?
To understand why this happens, it helps to understand how your nervous system actually works.
What Is Your Nervous System?
Your nervous system is constantly working in the background, helping your body respond to the world around you.
At a basic level, it has two main parts:
The central nervous system (your brain and spinal cord)
The peripheral nervous system, which connects the rest of your body
Within that, there’s a branch called the autonomic nervous system (ANS) and this is what we’re focusing on here.
Your autonomic nervous system is responsible for automatic, involuntary processes that keep you alive and functioning: heart rate, breathing, and digestion.
It’s also responsible for how your body responds to stress.
Three States: Regulation, Activation, & Shutdown
Within your autonomic nervous system, there are different states that influence how you feel and function day-to-day:
Regulation (Rest & Digest)
This is your body’s regulation and connection system.
It helps you:
Slow down
Feel grounded and present
Connect with others
Restore energy
This is the state where you feel calm, safe, and engaged.
Activation (Fight or Flight)
This is your body’s activation system.
It prepares you to respond to a real or perceived threat by:
Increasing heart rate
Heightening alertness
Redirecting energy toward action
This is where feelings like anxiety, urgency, irritability, or overwhelm can show up.
Shutdown (Freeze/Collapse)
This is your body’s protective shutdown system.
It takes over when your system senses a level of overwhelm or threat that feels too much to manage.
This can look like:
Feeling numb or disconnected
Low energy or fatigue
Shutting down or withdrawing
Feeling stuck or frozen
Important!
None of these states are bad.
You need all of them
They are all part of your body’s way of trying to keep you safe.
The goal isn’t to eliminate stress or never experience shutdown.
It’s to be able to move flexibly between states, rather than getting stuck in one for long periods of time.
The Missing Piece: Your Nervous System Responds to Perception
Your nervous system doesn’t just respond to actual danger.
It responds to perceived threats.
That means things like:
Deadlines
Social pressure
Uncertainty
Self-critical thoughts
…can all activate your stress response, even if you’re not in real danger.
This is especially relevant if you’re someone who:
Overthinks
Holds yourself to high standards
Feels pressure to perform or “get it right”
Your system may be activated more often than you realize.
Not because you’re doing something wrong, but because your body is trying to protect you.
The Connection Between Your Brain and Body
One of the key players in this system is the Vagus Nerve.
This nerve runs from your brainstem throughout your body, connecting to your heart, lungs, and digestive system. It plays a major role in your body’s ability to rest, recover, and feel safe.
It also sends signals both ways—meaning your body can influence your mind, just as much as your mind influences your body.
This is why things like breathing, movement, and physical sensation can have such a powerful impact on how you feel.
What Is Nervous System Dysregulation?
Dysregulation happens when your nervous system has difficulty shifting between states.
Instead of moving fluidly, it can get “stuck.”
For example:
You might spend your day under constant stress at work, and then find yourself unable to unwind at night. Your mind keeps replaying the day, your body feels tense, and even when you try to relax, you can’t fully settle. You might turn to scrolling or distractions to cope, but end up feeling more drained and disconnected.
Over time, this pattern can impact both your mental and physical well-being.
Common Signs of Dysregulation
Headaches or muscle tension
Rapid heart rate or shallow breathing
Digestive issues
Fatigue or trouble sleeping
Irritability or emotional overwhelm
Difficulty concentrating
Feeling stuck in anxiety, anger, or shutdown
These aren’t random symptoms.
They may be signals from your nervous system.
Why This Matters
When your nervous system stays in a prolonged state of activation, stress hormones continue circulating through your body.
Over time, this can affect:
Your physical health
Your emotional regulation
Your ability to think clearly and make decisions
But understanding what’s happening gives you something important:
Awareness.
And awareness is the first step toward change.
What Does Regulation Actually Mean?
Regulation doesn’t mean being calm all the time.
It means having the ability to:
Notice your state
Respond to it
And return to a more balanced place
For example, imagine feeling nervous before something important. You notice your thoughts speeding up and your body becoming tense. You take a few slow, steady breaths, allowing your body to settle just enough to regain focus and clarity.
That shift—that ability to move between states—is regulation.
And it’s a skill you can build.
You Don’t Have to Do This Alone: Co-Regulation
Your nervous system isn’t meant to function in isolation. Humans are wired for co-regulation, meaning we help each other feel safe and grounded.
This might look like:
Sitting with someone you trust
Talking through what you’re feeling
Physical connection, like holding hands or a hug
These moments don’t remove stress.
But, they help your system settle enough to respond to it more effectively.
Building a More Resilient Nervous System
A resilient nervous system isn’t one that’s always calm.
It’s one that can move between states with flexibility.
And this doesn’t require big, overwhelming changes.
Small, consistent practices can support your system over time, such as:
Slow, deep breathing
Humming
Gentle facial massage
Noticing your surroundings (5-senses check-in)
Spending time outside
Brief moments of connection with others
These practices signal safety to your body—and over time, help your system become more adaptable.
What You Can Do Today
If you want to start building awareness and supporting your nervous system, here’s a simple place to begin:
1. Track your patterns for 2 weeks
Notice your thoughts, emotions, and physical responses in different situations.
2. Ask yourself: “What state am I in?”
Begin identifying when you’re activated, shut down, or regulated.
3. Choose 1–2 simple tools
Focus on what helps your body feel even slightly more calm or grounded.
4. Practice consistently for a few weeks
Pay attention to any small shifts over time.
Where to Go From Here
Even with a clearer understanding of your nervous system, you might notice something:
It’s one thing to recognize “I’m feeling anxious” or “I’m overwhelmed right now”
and another thing to actually know how to shift out of that state.
Awareness is a powerful first step. But without practical ways to support your system, it’s easy to stay stuck in the same patterns. Especially in moments when stress, anxiety, or overwhelm take over.
You don’t need to overhaul your life.
Small, consistent shifts in how you support your nervous system can make a meaningful difference over time.
If you’re starting to notice patterns in your nervous system and wondering how to actually support it in real time, the next step is learning how to work with your body to create a sense of safety and regulation.
In my next post, we’ll walk through simple, effective ways to support your nervous system.
Referred to as vagal toning exercises, these can help you shift out of activation and into a more calm, connected state.
Read next: Vagal Toning Exercises to Support Nervous System Regulation
