You’re in a meeting. Someone says something about your project — nothing overtly critical, just a question about the timeline. And yet, before you’ve even processed the words, something shifts in your stomach. A tightening. A drop. Your hands get slightly cold. Your jaw clenches a fraction of a millimeter.

You haven’t thought anything yet. But your body already has an opinion.

If you’ve ever said “I had a gut feeling” or “something just didn’t sit right,” you weren’t being poetic. You were being, without realizing it, remarkably precise. Because your body doesn’t just carry your emotions around like luggage. It computes them — often before your conscious mind even clocks in for the day.

The Sense You Never Learned About

You know the five senses. Maybe you’ve heard of proprioception — the sense of where your body is in space (the reason you can touch your nose with your eyes closed, assuming a normal Tuesday). But there’s another sense that rarely makes the list, despite being arguably more important for your emotional life than all the others combined.

It’s called interoception: the perception of signals arising from inside your body. Heartbeat, breathing, gut contractions, muscle tension, temperature shifts, the full orchestra of visceral sensation that plays beneath the threshold of your daily awareness. Neuroscientist Bud Craig reframed it in 2002 as “the sense of the physiological condition of the body,” anchored in the anterior insular cortex — a small fold of brain tissue that functions as your body’s internal status dashboard.

Here’s what makes interoception different from, say, hearing a car horn: you can’t turn it off. It’s always running. The question is whether you’re listening.

Your Stomach Was Right All Along

In the early 1990s, neuroscientist Antonio Damasio proposed something that sounded almost too simple to be a scientific theory: that emotions aren’t just things you feel — they’re things your body does, and those bodily responses directly shape your decisions (Damasio, 1994).

He called this the somatic marker hypothesis. The idea: when you face a decision, your body generates physical signals — a quickened pulse, a sinking feeling, a flush of warmth — that “mark” different options with positive or negative valence. These markers work like a pre-conscious voting system. Before you’ve weighed the pros and cons, your body has already cast its ballot.

The evidence came from a gambling experiment that has since become one of the most famous in neuroscience. In the Iowa Gambling Task, participants sat in front of four card decks. Each turn, they drew a card from whichever deck they chose; every card earned them some money, but some also carried penalties that took money away. The catch: participants had no idea which decks were good and which were bad — they had to figure it out through trial and error. Two of the decks offered high rewards per card but came with devastating penalties that led to net losses over time; the other two offered modest rewards but small penalties, making them consistently profitable in the long run. Healthy participants, before they could consciously work out which decks were harmful, began instinctively pulling away from the risky decks and gravitating toward the safe ones. Their skin conductance — a measure of physiological arousal — spiked before they reached for a risky deck, as if their body was sending a warning their mind hadn’t yet received (Bechara et al., 2000).

Patients with damage to the ventromedial prefrontal cortex — the brain region that integrates these body signals — kept choosing the bad decks. They could explain the logic of the game perfectly. They just couldn’t feel which choice was wrong.

Your gut feeling isn’t mystical. It’s neurological. And when the system works, it’s remarkably fast.

Three Kinds of Body Awareness (and Why the Difference Matters)

If interoception were just one thing, the research would be simple. It’s not. Sarah Garfinkel and Hugo Critchley’s influential framework (2015) distinguishes three dimensions that don’t always align:

Interoceptive accuracy — how good you actually are at detecting internal signals. The classic test: can you count your own heartbeats without touching your pulse? Most people can’t, and the gap between their count and reality is measurable.

Interoceptive sensibility — how good you think you are. This is the self-report dimension, captured by questionnaires like Wolf Mehling’s Multidimensional Assessment of Interoceptive Awareness (MAIA), an instrument that breaks body awareness into eight distinct facets including noticing, not-distracting, attention regulation, and trusting your body (Mehling et al., 2012).

Interoceptive awareness — the metacognitive layer. How well does your confidence in your body-reading match your actual ability? This is the dimension that matters most, and it’s the one that most of us get wrong.

Here’s the uncomfortable part: someone can score high on sensibility (“I’m very in tune with my body”) while being objectively poor at accuracy. In other words, you can be confidently wrong about what your body is telling you. Sound familiar? It’s the interoceptive version of the Dunning-Kruger effect — and it has real consequences for emotional regulation.

The Body-Emotion Pipeline

Now for the part that changes how you think about feelings.

Fustos and colleagues published a landmark study in 2013 showing that participants with higher interoceptive awareness were significantly better at cognitive reappraisal — the ability to reinterpret a situation to change its emotional impact. When shown negative images, people who were more attuned to their body signals could more effectively downregulate their emotional response. The researchers concluded that “the perception of bodily states and their meta-representation as somatic markers are an essential prerequisite for adequate emotion regulation” (Fustos et al., 2013).

Read that again. The prerequisite for managing your emotions is noticing what your body is doing.

This makes intuitive sense once you stop to think about it. You can’t regulate an emotion you haven’t detected. And emotions don’t announce themselves with a polite notification — “Anger arriving in 3… 2… 1…” They show up as physical sensations first: the clenched jaw, the shallow breathing, the knot in the chest. If you’re not tuned into those signals, the emotion has already hijacked your behavior before you even realize you’re having one.

Zamariola and colleagues (2019) confirmed this through mixed-methods research: people with high interoceptive sensibility didn’t just regulate emotions better — they had a richer vocabulary for body-emotion connections. They could articulate things like “when I’m anxious, my chest feels compressed” or “anger starts in my shoulders.” They weren’t just feeling more. They were reading more.

Naming the Feeling: The Bridge Between Body and Brain

This is where another piece of the puzzle clicks into place. Psychologist Matthew Lieberman’s neuroimaging research demonstrated something beautifully simple: the act of putting a feeling into words — what he called affect labeling — reduces activity in the amygdala, the brain’s alarm center (Lieberman et al., 2007).

In his fMRI studies, when participants looked at emotionally charged images and were asked to label the emotion (“this person looks angry”), their amygdala response decreased compared to when they simply observed the images. The mechanism runs through the right ventrolateral prefrontal cortex, which essentially acts as a brake on emotional reactivity.

Now connect the dots: interoception tells you something is happening in your body. Affect labeling lets you put a name on it. And that naming — that translation from body signal to word — is itself a form of emotional regulation.

The body detects. The mind names. The naming calms.

It’s a pipeline. And if any stage breaks down — if you don’t notice the body signal, or if you notice it but can’t name it, or if you misname it — the whole system misfires. You snap at your partner and only realize you were anxious twenty minutes later. You agree to something in a meeting that your stomach was screaming about. You say “I’m fine” while your chest is doing its best impression of a vise grip.

When the System Breaks: Too Much and Too Little

Interoception isn’t a “more is always better” situation. The research is clear on this: both excessive and deficient interoception are problematic (Garfinkel et al., 2015).

Too little body awareness — and you’re flying blind. You don’t catch the early warning signals. Emotions build up like pressure in a sealed container until something gives. This connects directly to alexithymia, the condition we explored in an earlier article — difficulty identifying and expressing emotions, present in roughly 10-13% of the general population (Sifneos, 1973). Many people with alexithymia don’t lack emotions. They lack the interoceptive bridge to detect them.

Too much — especially the wrong kind — and you’re hypervigilant. Every heartbeat feels like a cardiac event. Every stomach churn is a crisis. This is the pattern seen in anxiety disorders and PTSD, where trauma survivors become either overwhelmed by body signals or disconnect from them entirely. A scoping review of 43 studies found that PTSD specifically compromises interoceptive awareness, and that the critical distinction isn’t how much you feel your body, but how you relate to what you feel — mindful and non-judgmental versus ruminative and catastrophic (Frontiers in Psychiatry, 2024).

The sweet spot is what researchers call adaptive interoceptive awareness: noticing body signals with curiosity rather than alarm. Observing without overreacting. Registering the stomach knot in the meeting and thinking “huh, that’s interesting — what’s that about?” rather than either ignoring it completely or spiraling into panic about what it means.

You Can Train This

Here’s the good news: interoception isn’t fixed. It’s a skill.

Sugawara and colleagues (2020) ran a longitudinal study where participants completed just one week of interoceptive training — heartbeat discrimination exercises with biofeedback. The results: significant improvement in interoceptive accuracy, reduced state anxiety, and reduced somatic symptoms. Even more striking, individual improvements in interoceptive accuracy correlated with improvements in decision-making quality. Better body-reading, better choices.

And the pathways for training are broader than you might think. Lazzarelli and colleagues (2024) identified two routes in their integrative review:

The top-down pathway: mindfulness meditation enhances cortical monitoring of body signals, improving interoceptive accuracy and, downstream, emotion regulation. This is the well-studied route — and it works.

The bottom-up pathway: body movement, breathwork, somatic experiencing, yoga — practices that generate afferent signals from the periphery, traveling up through the brainstem to the insula. This pathway is less studied but equally promising. It’s why a walk often does more for your emotional state than ten minutes of rumination. Your body isn’t just reflecting your emotions. It’s generating information that changes them.

Both pathways converge at the insula — the same brain region Craig identified as the interoceptive dashboard. Whether you arrive there through meditation or through movement, the destination is the same: a richer, more accurate sense of what your body is telling you, and a better ability to use that information wisely.

The “I’m Fine” Test

Here’s a practical experiment you can run right now.

Think of the last time someone asked how you were doing and you said “I’m fine.” Now replay that moment, but this time, scan your body instead of your thoughts. Where was the tension? What was your breathing doing? Was your jaw relaxed or clenched? Were your shoulders up near your ears?

If you noticed anything other than relaxed neutrality, your body was telling a different story than your mouth was. That gap — between what your body knows and what you say — is the interoceptive disconnect. And it happens dozens of times a day.

The fix isn’t dramatic. It’s not about becoming a meditation guru or spending three hours a day doing body scans. It starts with something almost embarrassingly simple: pausing to notice.

Before you respond to the email that irritated you — what does your chest feel like?

Before you agree to the thing you don’t want to do — what’s happening in your stomach?

Before you tell your partner “it doesn’t bother me” — where is the tension?

The body is not a distraction from your emotional life. It is your emotional life, or at least the first draft of it. The version that arrives before the story, before the justification, before the words.

The DeepConvos Connection

Of DeepConvos’ four root modes, Awareness is the one that begins here — in the body, before thought.

The Awareness mode isn’t about giving you answers. It’s about redirecting your attention inward. When you tell your Pigeon “I don’t know why I’m upset,” and the Pigeon responds not with analysis but with “What are you noticing in your body right now?” — that’s interoception being gently activated. That’s the body scan you forgot to do. That’s the Lieberman pathway being opened: notice the sensation, name it, and watch the emotional charge begin to shift.

It connects to the other three modes in a specific sequence. Body awareness feeds Emotional First Aid — you can’t stabilize what you haven’t detected. Detection feeds Socratic Questioning — “I feel tightness in my chest when I think about this conversation; what assumption might be causing that?” And Socratic questioning feeds Theory of Mind — because once you understand your own internal state, you’re better equipped to model someone else’s.

The body is the starting line. Everything else follows.

The next time you’re in a meeting and your stomach does that thing — the thing where it drops or tightens or just shifts in a way you can’t quite name — don’t push through it. Don’t override it with logic. Don’t tell yourself it’s nothing.

Pause. Notice. Name it if you can.

Your body has been running emotional calculations since before you could talk. It’s been sending you signals your entire life. The only question is whether you’ve been reading the messages.

Most of us haven’t. But you can start now. The body is patient. It’ll say it again.

References

Bechara, A., Damasio, H., & Damasio, A. R. (2000). Emotion, decision making and the orbitofrontal cortex. Cerebral Cortex, 10(3), 295-307.

Craig, A. D. (2002). How do you feel? Interoception: the sense of the physiological condition of the body. Nature Reviews Neuroscience, 3(8), 655-666.

Critchley, H. D., Wiens, S., Rotshtein, P., Ohman, A., & Dolan, R. J. (2004). Neural systems supporting interoceptive awareness. Nature Neuroscience, 7(2), 189-195.

Damasio, A. R. (1994). Descartes’ error: Emotion, reason, and the human brain. Putnam.

Damasio, A. R. (1996). The somatic marker hypothesis and the possible functions of the prefrontal cortex. Philosophical Transactions of the Royal Society B, 351(1346), 1413-1420.

Fustos, J., Gramann, K., Herbert, B. M., & Pollatos, O. (2013). On the embodiment of emotion regulation: interoceptive awareness facilitates reappraisal. Social Cognitive and Affective Neuroscience, 8(8), 911-917.

Garfinkel, S. N., Seth, A. K., Barrett, A. B., Suzuki, K., & Critchley, H. D. (2015). Knowing your own heart: Distinguishing interoceptive accuracy from interoceptive sensibility. Biological Psychology, 104, 65-74.

Lazzarelli, A., Ferraro, S., & Gentili, C. (2024). Interoceptive ability and emotion regulation in mind-body interventions: An integrative review. Behavioral Sciences, 14(11), 1107.

Lieberman, M. D., Eisenberger, N. I., Crockett, M. J., Tom, S. M., Pfeifer, J. H., & Way, B. M. (2007). Putting feelings into words: Affect labeling disrupts amygdala activity in response to affective stimuli. Psychological Science, 18(5), 421-428.

Mehling, W. E., Price, C., Daubenmier, J. J., Acree, M., Bartmess, E., & Stewart, A. (2012). The Multidimensional Assessment of Interoceptive Awareness (MAIA). PLoS ONE, 7(11), e48230.

Sifneos, P. E. (1973). The prevalence of ‘alexithymic’ characteristics in psychosomatic patients. Psychotherapy and Psychosomatics, 22(2-6), 255-262.

Sugawara, A., Terasawa, Y., Katsunuma, R., & Sekiguchi, A. (2020). Effects of interoceptive training on decision making, anxiety, and somatic symptoms. BioPsychoSocial Medicine, 14(7).

Zamariola, G., Vlemincx, E., Corneille, O., & Luminet, O. (2018). Relationship between interoceptive accuracy, interoceptive sensibility, and alexithymia. Personality and Individual Differences, 125, 14-20.

Zamariola, G., Frost, N., Van Oost, A., Corneille, O., & Luminet, O. (2019). Relationship between interoception and emotion regulation: New evidence from mixed methods. Journal of Affective Disorders, 246, 480-485.