Fewer Things Better
Fewer Things Better
Ep. 212 - Your Nervous System: What It Is, What It Isn’t, and What Actually Helps
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Feeling overstimulated doesn’t mean your brain is failing — it may just mean your nervous system has been working overtime. In this episode, we break down the science behind stress, regulation, and recovery in a way that’s practical, calming, and actually useful. Learn why modern life keeps your system on high alert, plus simple research-backed ways to create more calm, clarity, and balance in a constantly connected world.
Show Notes:
Your Nervous System: What It Is, What It Isn’t, and What Actually Helps
Today’s episode is about our body’s original operating system: the nervous system.
Unlike modern technology, which gets software upgrades every few months, this is the system we were born with, and it runs in the background every day, managing more than most of us realize.
Think of it as your body’s GPS for the physical world. Its role is to identify real, tangible threats in the environment. And while that role is still valid, our surrounding world has evolved dramatically.
Your nervous system must now navigate in an environment of information overload, constant connectivity, and a pace of change that is far faster than our biology.
Our nervous system is wired for one world. It's now being asked to run in a very different one.
The Bottom Line on Top of this episode is that your nervous system isn’t broken. It’s adapting to a world with a surplus of noise, urgency, and stimulation. With a little insight, however, we can help it better serve us.
To do so, let’s start by taking a closer look at the physiology.
The nervous system acts as your body’s communication network. It’s both highly evolved and, in other ways, more like a walkie talkie. It’s constantly sending signals between your brain and your body and back again, tracking everything from movement, sensation and changes, digestion, heart rate, mood, memory, and immune response. All of it, all the time.
Within that system is what’s called the autonomic nervous system. It runs entirely in the background. You don’t have to think about your heart beating or your food digesting. It’s just happening, quietly, constantly.
And it operates in two main modes.
The first one is the sympathetic nervous system, and that’s what most of us were taught as fight or flight. This is your body saying go. Heart rate up. Breathing faster. Muscles ready.
Think about the last time you slammed on your brakes or got a piece of unexpected news. That rush? That’s your sympathetic system springing into action.
Now its counterpart is the parasympathetic nervous system, that’s what we were taught as rest and digest. This is when your body gets to say hey, we’re safe, let’s slow down, let’s repair. Heart rate is slower. Digestion is easy. Immune system gets to work. I always think of this as biology’s version of a slow Sunday morning.
Here’s the important part: we are meant to move between these two states. They are the yin and yang of science, just like we naturally move between wake and sleep. It’s a system designed to work in rhythm.
The challenge is that modern life keeps tapping the sympathetic system all day long. An urgent message. A difficult conversation. A sudden news alert. Your brain isn’t distinguishing between the primitive threat of a lion chasing you and today’s version of seeing 47 new messages.
Your brain views both as needing a quick response with full attention. And bring your body along. And because we’re spending so much time in that get up and go mode, we’re not getting the full benefits of our parasympathetic system.
Let’s pause here for another double click around an additional component that really matters: the vagus nerve.
This is the longest nerve in your body, which is actually a pair of nerves that start in your brainstem and travel down the right and left sides of the body, it extends from the neck to the heart to the lungs and all the way through the gut.
The vagus nerve contains ~75% of the body’s parasympathetic nerve fibers, so it’s a real superhighway. When it’s active, you tend to feel calmer, clearer, and more grounded and ready to go.
Here’s what’s surprising: the majority of the signals traveling along that vagus nerve are going up, from your gut to your brain, not the other way around. Your belly isn’t just out there processing your lunch. It’s sending a constant stream of information upstream.
This is part of why you may feel the sensation of being nervous in your stomach. In fact, the word nervous shares a Latin root with nerve, meaning cord. Your gut and your brain are in a continuous two-way conversation, and the vagus nerve is the line.
So how can these power players best support you? Here are a few research-backed techniques that are always available to you.
The exhale. Deep breathing gets a lot of attention, and it’s totally valid. Breathing in increases your heart rate a little, but it's the breathing out, the exhale, that slows down the heart rate. A longer exhale than inhale is one of the fastest ways to shift into parasympathetic mode. Try breathing in for four counts and out for six. It’s subtle but it works.
Cold water. Forget the cold plunge trend. This is about splashing some cold water on your face or the back of your neck. Doing so activates the vagus nerve and it drops your heart rate quickly. It’s a disruption through a physical act that helps you redirect your physiology in seconds.
Humming or singing. Surprising, right? The vagus nerve runs directly through your vocal cords, which means humming, singing, even gargling creates vibration along that pathway and it stimulates the parasympathetic system. So grab a go-to song to sing or just start humming as a way to hit the system reset button.
And finally, real connection. Physical touch, like a hug or a hand on the shoulder from someone you trust, is one of the most direct vagal activators we have. It signals safety to the nervous system almost immediately. If you’re not with somebody in person, a warm interaction with someone you love also works, though a little more lightly. The key ingredient in both is your brain registering the connection as genuinely safe, not just social.
A quick nerdy note before we close. The research on the vagus nerve is genuinely exciting and the science is real. And there is a lot being marketed as biohacks. Some have real applications. But our bodies can do a lot for themselves when we simply allow the space for our systems to work.
If you are interested in more about the vagus nerve, I’ll put a link to Episode 163 in the show notes, we dug more into it then. And I also want to acknowledge that there are other nervous system responses beyond fight or flight, including freeze and fawn, we’ll explore all of those more from a psychological perspective in a future episode.
The goal here isn’t to never feel stress. That’s a normal part of life. But your body is also built to recover. And that can start with surprisingly small things.
Be aware of when you feel out of balance and look for what’s already within reach.
Fewer hacks, more pauses.
Moments of safety, recovery, and connection in a world that rarely slows down.
But sometimes, we can...and we should.