When Your Body Doesn't Send the Message

At some point in the afternoon the words on the screen stop making sense. Not because you are tired — you do not feel tired. Something has gone sideways and you cannot locate it.

You sit there. You get up, eventually, and eat something, and quarter of an hour later your brain is back. You try to work out when you last ate. You cannot reconstruct it with any certainty. Not because you were absorbed. Because nothing came through. No hollow feeling, no pull towards the kitchen, no growl.

The hunger simply did not happen, and then you were at the bottom of it.

What this actually looks like day to day

This is what unreliable interoception looks like from the inside, and it is not a single dramatic event. It is a steady drip of information that either does not arrive, or arrives scrambled, or arrives all at once when there is already too much of it.

The sense that lets you know what is happening inside your body — hunger, thirst, temperature, fatigue, the physical texture of an emotion — is called interoception, and for many autistic people and those with ADHD, it does not function as a continuous stream.

It cuts out. It delays. It delivers quietly and then suddenly at volume, without any of the steps in between. You sit through a cold afternoon without registering the cold until your fingers stop working properly. You are thirsty enough for a headache before you feel thirsty. You know, in a factual sense, that you slept badly last night, but "tired" does not describe anything you can locate in your body right now — and so you carry on, and carry on, until the carrying on stops being possible, and there is no gradual warning, just an edge.

What is happening

What is happening is not that you are failing to attend to your body. The signals themselves are unreliable. The internal pathways responsible for conveying body-state information to the brain — attributed partly to the insular cortex and the broader interoceptive network — appear to work differently in many autistic people.

The signal is intermittent. Or it is there but difficult to interpret, like a station you can only half receive. Or it is absent entirely until the situation has become critical enough to produce a signal even broken equipment cannot miss.

This is also why emotions can arrive the way they do. Most emotions are not just thoughts — they are physical events first. A tightening across the chest. A shift in breathing. A change in how your body is holding itself.

If those physical events are not being transmitted clearly, the emotional information attached to them is not coming through either. You do not feel the anxiety building during the difficult meeting. You feel fine. You feel fine all the way home, and then you are in the kitchen making tea and something small happens — the bag splits, or a text arrives — and the whole afternoon lands on you at once, enormous, and you have no idea what triggered it.

Nothing triggered it. It was already there. It just had not been made available to you until now.

Alexithymia — the difficulty identifying and putting words to your own emotional states — is common among autistic people and is closely bound up with this. It is not emotional shallowness. It is more like trying to describe a room you cannot enter, through a window that is frosted.

What it costs

The hunger-to-shutdown pipeline is one of the most consistent and least discussed consequences of unreliable interoception. When no reliable hunger signal arrives, eating happens when routine prompts it, when another person mentions it, or when the absence of eating has already become undeniable — and by that point, the blood sugar has dropped, the cognitive capacity has contracted, and the irritability or flatness or shutdown is already in place.

You can sometimes watch yourself becoming very difficult to be around without being able to do anything about it, because you have not yet identified that what is required is a meal.

This accumulates. Days of imprecise eating, of missing the signal and then eating too much too late, wear on the system in ways that compound. It is part of what underlies the physical exhaustion in ND burnout — the kind of depletion that sleep does not fix because the problem is not sleep, it is the steady baseline deficit of a body that has not been receiving accurate information about what it needs.

The emotional version is harder to manage because there is no sandwich equivalent. When overwhelm arrives fully formed and without preamble, you cannot go back and intervene at an earlier stage — the earlier stage was not available.

This is one of the mechanisms behind shutdowns and meltdowns that feel, from the inside, like they came from nowhere. From the outside, the signs may have been there. From the inside, there were no signs. There was nothing, and then there was too much. This is the same dynamic we have written about in Sensory Overload Recovery — accumulation below the threshold of awareness, and then arrival at the edge without the warning the edge is supposed to come with.

Masking makes it worse, not only because it is exhausting but because it requires exactly the kind of internal monitoring that interoception already makes unreliable. You are trying to run two surveillance systems at once and one of them was already intermittent.

The result is that you can spend an entire day apparently functioning, arrive home, and have no sense of how depleted you are until you try to do one more ordinary thing and cannot.

The masking and exhaustion piece covers this separately, and it is worth reading them alongside each other, because the physical cost of masking very often sits invisibly on top of an interoceptive system that was not reporting accurately to begin with.

Why the standard advice doesn't reach you

"Listen to your body" works as advice for a body that is consistently broadcasting. When the broadcast is intermittent or absent, the instruction doesn't resolve into anything. You listen, and there is either nothing there, or there is noise you cannot interpret. Trying harder to listen doesn't fix a faulty transmission.

Most of what gets called self-care has the same problem at its foundation — it assumes that you can feel when you need rest, and that the feeling is the main thing standing between you and acting on it.

For some people, the main barrier is not noticing. At all. Or not until much too late. Rest does not feel different from non-rest. Needing to eat does not feel different from having just eaten. Being at the edge of capacity does not feel different from being fine.

The information that attentiveness is supposed to work with is simply not arriving.

What can substitute

The practical question, then, is what to use instead of internal signals when internal signals are not reliable.

For eating, one option is times rather than hunger — meals at consistent points in the day, regardless of whether anything has prompted them. Some people find this removes a layer of daily decision-making they did not realise they were carrying. Others find it strange to eat when they feel nothing indicating they should. Both responses are normal.

The point is that the meal happens, and the crash that would have arrived at 3pm either does not, or arrives less severely.

External cues for other body states work on the same principle. A recurring alarm — something simple, every couple of hours: have you had water? Is anything physically uncomfortable? Do you need to move? — can substitute for the check-in that the body is not initiating itself.

This does not feel natural. It can feel effortful in a way that is itself a demand. On bad days, the alarm goes off and you dismiss it and nothing changes. That is part of how it works. The question is whether it catches enough of what would otherwise go unnoticed to make some difference on some days.

Borrowed awareness — having someone in your life who notices from the outside what is not visible from the inside — is worth naming because it is real and because it does not have a better name. A partner, a housemate, a friend who asks "have you eaten?" is providing a cue the body was not producing.

This is not the same as feeling hunger, but it achieves the same outcome. Not everyone has access to this and not everyone wants it, and both of those are also fine.

One place to start

If you want to try something, pick one body state and one external cue. Just one. Water is often the easiest starting point. Mild dehydration affects concentration within a couple of hours and the fix is immediate.

A glass on the desk. An alarm set to something neutral — not a prompt to be well, just a marker that this is a moment for water.

Some days the alarm will go off and you will drink and nothing will change. Some days you will notice, ten minutes later, that a low-level headache you had not registered has quietly resolved.

There is no practice to build from this. There is just the gap between what the body is sending and what you need it to send, and the occasional external thing that bridges it.