Have you ever noticed you feel like a completely different person depending on where you are, or who you’re with?
On holiday, you sleep deeply, wake up with energy, and barely think about the chocolate in the pantry. Back home, in the middle of a busy week, you’re waking up tired, snapping at little things, and craving something sweet every night.
Same body. Same person. Sometimes even the same food. So, what’s changed?
This is a pattern I often see in clinic. When people start tracking their symptoms alongside where they’ve been and who they’ve spent time with, the connection can be profound. Anxiety, energy, mood, sleep, cravings and even digestion can shift noticeably from one environment to another, without anything else in their routine changing.
The common thread is the nervous system.
Your nervous system is always reading the room
Your autonomic nervous system works quietly in the background, constantly scanning your surroundings and asking one question: am I safe?
It has two main modes.
- The sympathetic state, often called fight or flight. Your body is alert, ready for action, and directing energy away from things like digestion and repair.
- The parasympathetic state, often called rest and digest. Your body feels safe enough to slow down, digest properly, repair and rest deeply.
Neither state is bad. We need both. The challenge is when we spend most of our time in fight or flight, often without even realising it.
A helpful way to picture this is a little meerkat. When your nervous system is on alert, it’s like that meerkat constantly popping its head up, looking left, looking right, looking behind you, scanning for anything that might be a threat.
Here’s the important part. Your body responds the same way whether the threat is real or perceived. A tense dinner table, a looming deadline, an exam, an overflowing inbox, or a place that holds a lot of old patterns can all trigger the same stress response, releasing adrenaline and cortisol, as if you were facing real danger.
This is why environment matters so much. Some places and people send your body signals of safety. Others keep the meerkat on high alert.
What is nervous system dysregulation?
Nervous system dysregulation is when your body gets stuck in a stress response, or struggles to return to calm once a stressful moment has passed. Instead of moving flexibly between alert and rest, the meerkat stays on duty around the clock.
Being on constant alert is a bit like sprinting a marathon. It takes an enormous amount of energy. It also makes it harder for your body to drop into deep, restorative sleep, which is why you can spend eight hours in bed and still wake up exhausted.
Some common signs your nervous system may be dysregulated include:
- Waking up tired, even after a full night’s sleep
- Waking very early and struggling to get back to sleep
- Feeling wired but tired, especially in the evening
- Anxiety, racing thoughts or difficulty switching off
- Being more reactive than usual, where little things set you off
- Strong cravings, particularly for sugar or quick snacks
- Digestive changes such as bloating, discomfort, constipation or loose stools
- Feeling like you need to keep busy to feel okay
These symptoms are not a personal failing. They’re your body doing exactly what it’s designed to do when it doesn’t feel safe.
The gut connection
Your gut has its own nervous system, called the enteric nervous system. It’s a vast network of hundreds of millions of nerve cells lining your digestive tract, so complex that it’s often called the second brain. It can even keep your gut moving on its own, independently of the brain.
The gut and brain are in constant two-way conversation through what’s known as the gut-brain axis, with the vagus nerve acting as one of the main communication lines. Your gut microbes are part of that conversation too. They help produce compounds that influence mood and sleep, and around 90 percent of your body’s serotonin, your natural “anti-depressant” is made in the gut. Crazy right?
So, when your nervous system is in fight or flight, your gut feels it. Digestion can slow down or speed up, the gut can become more sensitive, and over time stress can even influence the balance of your gut bacteria.
This is why digestive symptoms aren’t always just about the food. You might notice that a meal sits perfectly well when you’re relaxed on holiday, yet the same meal leaves you bloated and uncomfortable during a stressful week. Food still matters, of course. But your nervous system state can change how your body responds to it.
Interestingly, traditional systems of medicine such as Traditional Chinese Medicine and Ayurveda over thousands of years old, have long viewed the gut as ‘the brain of the body’, an idea modern research on the gut-brain axis continues to explore.
Why cravings get louder when you’re stressed
If you find yourself reaching for chocolate at night and then being hard on yourself for it, this part is for you. Cravings are often much less about willpower than we think.
As human beings, we’re wired to move toward pleasure and away from pain. When your body feels under threat, your brain looks for the quickest, easiest way to feel better right now. And it goes for what’s familiar. For many of us, that’s sugar.
There’s a physical side to this too. When your body thinks it may need to run from danger, it wants fast fuel, and glucose is the quickest source available. In a strange way, those cravings are your body trying to help you.
It’s also why stress cravings are rarely for something you need to cook. They’re usually for the packet food, the thing that’s already there and ready to go.
When you feel genuinely safe and relaxed, many people notice those cravings quieten, sometimes disappearing altogether, even when their eating is less structured than usual.
The inner critic seesaw
Here’s what often happens next. You have the chocolate, you get a little hit of dopamine, and for a moment you feel better.
Then the inner critic steps in. You shouldn’t have eaten that. Where’s your discipline?
And just like that, you’re straight back on alert. Guilt and shame are threats too, even when they come from inside your own head. It becomes a seesaw: a brief lift out of stress, followed by a drop straight back into it.
A question worth sitting with: if a friend spoke to you the way your inner critic does, would you still meet her for brunch? Probably not. Yet many of us spend time with that voice every day.
The good news is that the inner critic is learned, not something we’re born with. And what is learned can, with time and support, be gently unlearned.
What regulation really means
A regulated nervous system doesn’t mean never feeling stressed. Stress is a normal part of life, and a healthy stress response is protective.
Regulation means flexibility. It’s your body’s ability to respond to a challenge, and then return to a calm, safe baseline once the challenge has passed.
The encouraging thing is that this capacity can be strengthened. Your nervous system learns from repeated experiences of safety. Small, consistent signals, practiced often, tend to make more difference than one big change done occasionally.
It also helps to notice which environments, people and activities already help you feel calm, so you can lean into them more deliberately, especially during demanding seasons of life.
Simple ways to support your nervous system
You don’t need to overhaul your life. Start with one or two of these and build from there.
- Notice without judgment. For two weeks, jot down your anxiety and morning energy out of 10, any cravings, your digestion, and where and with whom you spent most of your day. Observe it like a bird watching from above. Patterns often appear that you’d never spot otherwise.
- Breathe before the trigger, not just after. Slow breathing with a longer exhale, such as 4-7-8 breathing (in for 4, hold for 7, out for 8), helps signal safety to your body. Try a few rounds before walking in the door after work, before an exam or difficult conversation, or before sitting down to a meal.
- Get outside. Time in nature and morning sunlight can be deeply regulating. Walk on the grass or sand barefoot, sit in a park, or head to the beach.
- Prioritise easy connection. Time with people who help you feel like yourself matters. It doesn’t always need conversation. Walking side by side, sitting together quietly, or sharing an activity all count.
- Do something with your hands. Hobbies like craft, colouring in, card games, puzzles, gardening or painting are absorbing, playful and calming for a busy mind.
- Create rhythm with your meals. Eating at fairly consistent times, especially breakfast and lunch, can be grounding for both your nervous system and your digestion.
- Eat in rest and digest. Sit down to eat, take a few slow breaths first, and chew well. Eating on the run keeps your body in a state that isn’t designed for digestion.
- Protect your wind-down. Dim the lights, step away from screens and give your body a chance to shift gears before bed.
- Try gentle vagus nerve practices. Humming, singing and slow, deep breathing are simple, free ways many people find calming.
- Speak to yourself like a friend. When the inner critic shows up, ask yourself whether you would speak to someone you love that way. Then offer yourself one kinder sentence instead.
On calmer, more nourishing weeks, you may find you need these tools less. That’s a good sign. Lean on them more during busier, more demanding seasons.
When to seek support
If you’re noticing ongoing digestive symptoms like bloating, excessive gas, constipation, loose stools or swinging between the two, it’s worth looking into rather than putting up with it. These symptoms can have several underlying causes, and a practitioner can help you work out what’s going on, including whether testing would be useful.
If any of this feels familiar, I’d love to support you, together we can look at what’s happening in your gut and your nervous system, and create a plan that supports both. You can book an appointment with me here, or learn a little more about me and how I work.
Your body is always giving you information. It isn’t failing you. It’s telling you where it feels safe, and where it needs more support.
Erika, Clinical Naturopath
This article is general information only and isn’t a substitute for personalised health advice. Please speak with a qualified health practitioner about your individual needs.
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