Listening to Your Body: What Interoception Is and Why It Matters

There is a kind of knowing that does not come from thinking. It arrives before words, before analysis, before you have had a chance to reason your way to a conclusion. You walk into a room and something feels off. You are offered an opportunity that looks good on paper and yet something in you hesitates. You are in the middle of a conversation and notice, without quite knowing why, that you have gone somewhere distant inside yourself.

This is interoception at work. And while the word itself may be unfamiliar, the experience almost certainly is not.

What Interoception Actually Is

Interoception is the perception of signals arising from within the body itself. It encompasses the felt sense of the heartbeat, the quality and depth of breathing, the tension or ease in the muscles and gut, the sense of warmth or constriction in the chest, the subtle pull of tiredness or aliveness that colours the texture of a moment. These are not background noise. They are the body’s continuous commentary on experience, running beneath conscious thought like a current beneath the surface of water.

The word comes from the Latin interus, meaning internal, and was first used systematically by the neurologist Charles Sherrington in the early twentieth century to describe the class of sensory signals that originate inside the body, as distinct from those that come from the external world. For most of the century that followed, interoception was treated largely as a physiological concern, relevant to medicine but not to psychology or lived experience. That understanding has shifted considerably in recent decades.

Current neuroscience locates the primary processing of interoceptive signals in the insular cortex, a region folded deep within the brain that receives continuous input from the body’s organs, muscles, and internal tissues. The insula does not simply register these signals passively. It integrates them with information about the external environment, with memory, with emotional processing, and with the brain’s predictions about what is likely to happen next. The result is what researchers sometimes call the felt sense, a continuously updated, body-based sense of how one is doing, what one needs, and what one feels.

Antonio Damasio’s somatic marker hypothesis, developed through decades of research with patients who had sustained damage to interoceptive processing regions, provides some of the most compelling evidence for why this matters. Damasio found that these patients, who were otherwise cognitively intact, became profoundly impaired in their ability to make decisions. Not because they lacked information or reasoning capacity, but because they had lost access to the felt sense of what mattered, what felt right or wrong, what carried a sense of approach or avoidance. The body’s signals, it turned out, were not noise to be filtered out by rational thought. They were essential inputs into judgment, values, and the capacity to navigate a life.

Interoception in Everyday Life

Interoception is not an exotic capacity reserved for meditators or the therapeutically inclined. It operates in ordinary experience all the time, often below the threshold of conscious awareness.

It is present in the way a piece of music can produce a physical sensation in the chest before you have registered an emotional response. It is present in the gut-level sense that a relationship has shifted, even when nothing has been said. It is present in the fatigue that accumulates before you have named it as exhaustion, in the tension that builds in the shoulders during a difficult phone call, in the particular quality of ease that settles in the body when you are somewhere safe and among people you trust.

Many of the experiences people describe as instinct, or gut feeling, or just knowing something without being able to say why, are interoceptive experiences. The body has registered something and produced a signal. Whether that signal reaches conscious awareness, and what happens to it when it does, depends on how attuned a person is to their own interior.

For some people, this attunement is relatively natural. They move through the day with a reasonable sense of what they are feeling, what they need, when they are depleted, and when something is pulling at them that deserves attention. For many others, particularly those who grew up in environments where inner experience was not welcomed, mirrored, or safe to express, the connection between body signal and conscious awareness can be significantly disrupted.

When the Body’s Voice Goes Quiet

Interoceptive awareness varies considerably between individuals, and the reasons for this variation are not random. Research has consistently found associations between reduced interoceptive sensitivity and histories of trauma, chronic stress, anxiety, and early relational difficulty.

This makes a particular kind of sense when you consider what those experiences require of the nervous system. A child who grows up in an unpredictable or threatening environment learns, adaptively, to direct attention outward, toward reading the external environment for signs of danger, rather than inward toward internal states. A person whose emotional experiences were routinely dismissed, punished, or simply not responded to learns, also adaptively, to disconnect from those experiences. The inner signals do not disappear. They are simply no longer listened to.

Bessel van der Kolk’s research with trauma survivors has documented reduced activation in interoceptive brain regions alongside heightened activity in threat-detection areas. The result is a person who is simultaneously alert to external danger and cut off from the internal signals that would tell them how they actually feel, what they actually need, and whether a given situation is genuinely safe. Many trauma survivors describe this as a kind of inner silence or blankness, a sense of not quite knowing what they feel, or of feeling disconnected from their own body.

This disconnection is not a flaw or a failure. It was a solution to a real problem. The difficulty is that, like all early adaptive strategies, it persists long after the conditions that made it necessary have changed.

Interoception and Attunement

Readers of our series on attunement will recognise the connection here. Attunement, as we explored in that series, is the experience of having one’s inner states recognised and responded to by another person. The developing child who is consistently attuned to learns, through thousands of small repeated experiences, that their inner world is real, expressible, and safe to know. Part of what this teaches, at a neurological level, is that inner states are worth attending to, that the signals the body sends are meaningful and will be met.

Conversely, chronic misattunement, where a child’s inner signals are consistently missed, dismissed, or met with responses that are frightening or confusing, can disrupt the development of interoceptive awareness at a fundamental level. If the experience of turning inward and expressing what is found there has been consistently met with indifference or rejection, the nervous system learns to turn away from inner experience rather than toward it.

Self-attunement, which we explored in Part 4 of the attunement series, is in large part an interoceptive capacity. To attune to oneself is to be able to notice what is happening inside, to bring a quality of curious, non-judgmental attention to the body’s signals, and to allow those signals to inform how one understands one’s own experience and needs. Developing this capacity is often a central part of therapeutic work, particularly for those whose early relational experiences did not support it.

Developing Interoceptive Awareness

The encouraging finding from both neuroscience and clinical practice is that interoceptive awareness can be developed. The brain regions involved show measurable changes in response to certain practices, and people who engage consistently with body-based awareness approaches report genuine shifts in their relationship to their own inner experience.

A few approaches are worth noting.

Slowing down is perhaps the most basic entry point. Interoceptive signals are often subtle, and they are easily overridden by the pace and noise of contemporary life. Many people discover, when they first begin to slow down and turn attention inward, that there is considerably more happening in the body than they had realised. This can feel unfamiliar or even uncomfortable at first. It tends to become less so with practice.

Mindfulness practices, when approached as body-based awareness rather than purely as thought observation, have been shown in multiple studies to increase interoceptive sensitivity and to reduce the emotional reactivity associated with trauma and anxiety. The instruction to notice the breath, for instance, is at its core an interoceptive instruction, an invitation to attend to a body sensation that is always present but rarely consciously tracked. Over time, this kind of practice can expand the capacity to notice a wider range of internal signals.

Naming what is felt is a simple but genuinely useful practice. Research by Matthew Lieberman and colleagues has demonstrated that putting words to emotional experience, what is sometimes called affect labelling, reduces activation in the amygdala and increases activity in prefrontal regions associated with regulation and reflection. The practice does not require precision. Simply asking, with genuine curiosity, what am I noticing in my body right now, and is there a word that comes close to describing it, begins to build the bridge between the body’s signals and conscious awareness. Even approximate words, unsettled, constricted, heavy, open, help.

Movement practices that invite attention to bodily experience rather than performance or outcome, including yoga, certain forms of dance, tai chi, and somatic movement practices, can also support interoceptive development. The key is an orientation of curiosity toward what is felt rather than a focus on what the body is doing or how it looks.

For those whose interoceptive disconnection is rooted in significant trauma, these practices are often best undertaken with therapeutic support. Turning toward body-based experience without adequate containment can, for some people, activate material that needs to be held in a safe relational context. Body-based therapeutic approaches, including somatic experiencing, sensorimotor psychotherapy, and EMDR, work specifically with the interoceptive dimension of trauma, supporting the gradual development of a safer relationship with inner experience.

Coming Home to Yourself

There is something worth naming about what it feels like when interoceptive awareness begins to develop or deepen. It is often described, by people in therapy and by those who engage seriously with body-based practices, as a kind of coming home. Not a dramatic transformation, but a gradual increase in a sense of inhabiting oneself more fully, of being present in the body rather than hovering somewhere above or alongside it.

This matters not just for wellbeing in the abstract. It matters for relationships, because genuine intimacy requires the ability to know and communicate what one actually feels and needs. It matters for decision-making, because good judgment draws on the body’s signals as much as on rational analysis. It matters for the capacity to be moved by experience, to let beauty, connection, grief, and joy actually land rather than passing at a slight remove.

The body has been keeping score all along, as van der Kolk’s phrase so memorably captures. Interoception is the capacity to read that score, and to let what is written there inform, with compassion and curiosity, how one lives.

At Excel Psychology, our clinicians work with the whole person, including the body-based dimensions of emotional experience and wellbeing. If you are curious about what it might mean to develop a more attuned relationship with your own inner experience, we would welcome the conversation.

References

Damasio, A. (1994). Descartes’ Error: Emotion, Reason, and the Human Brain. Putnam.

Craig, A. D. (2009). How do you feel - now? The anterior insula and human awareness. Nature Reviews Neuroscience, 10(1), 59–70.

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.

Sherrington, C. S. (1906). The Integrative Action of the Nervous System. Yale University Press.

van der Kolk, B. (2014). The Body Keeps the Score: Brain, Mind, and Body in the Healing of Trauma. Viking.

Farb, N., Daubenmier, J., Price, C. J., Gard, T., Kerr, C., Dunn, B. D., Klein, A. C., Paulus, M. P., & Mehling, W. E. (2015). Interoception, contemplative practice, and health. Frontiers in Psychology, 6, 763.