Your Inner Nervous System Thermometer
Have you ever noticed yourself going from “I’m fine” to “I CAN’T DO THIS ANYMORE!” before you even realise what is happening?
Perhaps it is a school morning and your child refuses to put their shoes on. You look at the clock and realise you are already running late. You ask again, they refuse again, and you can feel something changing inside you.
Your shoulders become tense, your breathing changes, your voice gets louder and your thoughts become increasing. Before you know it, you are no longer responding to your child. You are reacting from a nervous system that has moved into protection.
But what if we could learn to notice what is happening before we reach that point?
This is the idea behind the Inner Nervous System Thermometer: a simple way to become more aware of the signals our body gives us as our nervous system responds to stress, uncertainty, overwhelm and perceived threat.
It is not about controlling our emotions or preventing ourselves from ever becoming dysregulated. Instead, it is about becoming familiar with our own internal experience so that we can recognise when our “temperature” is beginning to rise and, whenever possible, create a little more space before our automatic reaction takes over.
Our nervous system is constantly responding to what is around us:
from both our internal and external environment. We don’t consciously control this process.
A sound, a particular tone of voice, a touch, feeling rushed, being watched or judged, or even a situation that reminds us of something we have experienced in the past.
Sometimes we know exactly what has triggered us. Other times, we may not be able to identify it at all. And sometimes the intensity of our reaction can seem surprisingly big compared with what is actually happening in the moment.
That doesn’t mean that something is wrong with us. Our nervous system isn’t failing us. It is trying to protect us.
Our responses are influenced by what is happening right now, but they can also be shaped by previous experiences, learned associations, accumulated stress and the state of our nervous system in that particular moment.
This is one reason why the same parenting situation can feel completely different depending on the day.
Your child refusing to get dressed may feel mildly annoying on one morning, while on another it may feel completely unbearable. The situation may be almost identical, but your internal resources are not.
The difference may not be your child. It may be the state of your nervous system.
We cannot always change the circumstances that trigger us, and we cannot change everything that has shaped our responses.
What we can develop is a greater awareness of what happens inside us when our nervous system begins to move towards overwhelm.
This is where the thermometer can become useful.
What does your inner thermometer look like?
Imagine that you have an internal thermometer that gives you information about your nervous-system state. It isn’t a medical measurement, and there isn’t a precise number attached to each level. It is simply a visual tool that can help us put words and awareness around something that is otherwise difficult to notice.
When we feel relatively safe and connected, our thermometer may be lower. We may feel grounded, flexible and able to respond to what is happening around us (green).
As stress and activation increase, our temperature begins to rise. We might become more tense, impatient, reactive or overwhelmed (orange).
The important part isn’t the number itself. It is learning to recognise the direction.
Is your temperature staying steady, or is it rising? And perhaps even more importantly, what does your body do when it starts to rise?
For some of us, the first signs may be very subtle.
We may notice our shoulders becoming tense, our jaw tightening or our breathing becoming shallower.
Perhaps we start talking faster, feeling rushed or becoming increasingly focused on getting our child to cooperate. Our thoughts may become less flexible and we may find ourselves thinking, “Why won’t they just listen?” or “I’ve told you five times!”
These are not signs that we have already failed. They are information.
Our nervous system is communicating with us.
We rarely move from calm to completely overwhelmed in one second
One of the reasons I find the thermometer so helpful is that it allows us to look at what happens before the explosion.
We often describe a difficult parenting moment by saying, “I just lost it.” But when we slow the moment down, there is often much more happening before that final reaction.
Perhaps you woke up already tired. Your child isn’t getting dressed, you realise you are running late and you start watching the clock. Your shoulders tighten. Your breathing changes. Your child asks you another question and you notice irritation building. You answer more sharply. They resist again. Your voice becomes louder.
Your thermometer has been rising.
The final refusal, spilled drink or argument may have been the moment that pushed you over your limit, but it wasn’t necessarily where the process began.
This is why learning to recognise our earliest signals can be so valuable.
Instead of waiting until we reach “I can’t take this anymore,” we can begin noticing the smaller changes that come before it: My shoulders are getting tight. I’m holding my breath. I’m feeling rushed. My voice is changing. I can feel irritation building.
The more familiar we become with these signals, the easier it can become to recognise that our internal temperature is changing. And that moment of recognition can create something incredibly important: a little space between what is happening and what we do next.
It doesn’t mean we will always respond perfectly or kindly. It doesn’t mean we will never shout, become impatient or reach our limit.
But noticing can give us the possibility of making a different choice.
Regulation doesn’t mean keeping your thermometer low
This is an important distinction because regulation is sometimes misunderstood as staying calm all the time.
It doesn’t mean eliminating anger, frustration, fear or overwhelm.
Parenting is full of moments that naturally stretch us, and our nervous system will respond to them. There will be days when our thermometer rises more quickly because we are tired, stressed, overstimulated or simply carrying more than usual.
The goal isn’t to keep our temperature at zero.
The goal is to become familiar with our own thermometer.
When we notice that our temperature is rising, we can begin asking ourselves what might help.
Perhaps we need to slow down, take a breath, drink some water, lower our expectations, change the environment or ask someone for support. Sometimes we may need to step away for a moment before returning to the interaction.
And sometimes we won’t notice until it is too late.
That is part of being human.
Regulation can also happen after the rupture. We can return to our child, acknowledge what happened, reconnect and repair. The aim is not to create a relationship where difficult moments never happen, but to develop the capacity to find our way back to connection when they do.
And this is where the thermometer becomes more than a tool for understanding ourselves. It can also become a way of becoming more curious about our children.
What about your child’s thermometer?
What happens when your child’s internal temperature begins to rise?
What might their body be communicating through clinginess, resistance, crying, aggression, withdrawal or difficulty with transitions?
Learning to notice our own thermometer is often the first step towards becoming more curious about theirs.
Stay tuned for next week’s article, where we’ll explore your child’s thermometer and what their behaviour might be communicating.
Book a free discovery session today to pause, reflect on your parenting experience and explore the challenges you’re currently facing, with a compassionate and non-judgemental space to begin understanding what may be happening beneath the surface.
