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# Rumination: Why Your Brain Is Like a Dog With a Stick
- URL: https://www.drjerrykennard.com/rumination-why-your-brain-is-like-a-dog-with-a-stick/
- Published: 2026-08-27T08:51:50.000Z
- Updated: 2026-08-27T09:09:02.000Z
- Description: It doesn't matter that the stick has been fetched forty times already. Your dog will find it, present it, and want to do it all again. Your brain, at three in the morning, is doing the same thing with the conversation you had with your boss. The difference? The dog has more fun.
- Author: Jerry Kennard
- Tags: Practical Tools

It arrives, uninvited, somewhere around half past two in the morning. It concerns something that has already happened — a comment made at a meeting, an email that could have been worded better. The thought does not arrive with any new information. It has nothing further to offer. It is simply the same material, retrieved and replayed, for the fortieth time this month, producing the same low-grade dread it produced the previous thirty-nine times.

This is rumination. 

## Cousins

When we problem-solve, we consider a difficulty, generate options, weigh them, and eventually arrive somewhere like a decision, a plan, or at minimum a clearer picture of what we don't yet know. It has direction. It resolves, or it progresses toward resolution.

Rumination doesn't move. 

Susan Nolen-Hoeksema, whose research essentially founded this field, defined it as: repetitive, with passive focus on the causes, meanings and consequences of a distressing experience, without any accompanying movement toward a solution. 

You go over the meeting again. Why did I say that? What did he actually mean by his reply? What does this say about me? Then, ten minutes later, you go over it again, arriving at the same unresolved place you started from.

This is the critical difference between rumination and its close cousin, worry, examined in my article on [how men manage worry — and what actually works](https://www.drjerrykennard.com/how-men-manage-worry/). Worry tends to be future-focused and often at least attempts to plan for a feared outcome, however unproductively. Rumination is backwards-facing — replaying something that has already happened and cannot, definitionally, be changed. The meeting is over. The comment has been made. There is nothing left to plan for. There is only the replay.

The dog does not learn anything new from the fortieth retrieval of the stick. Your brain does not learn anything new from the fortieth replay of Tuesday's meeting. Both activities have the same structure: motion that feels productive, and isn't.

## Why the brain bothers with it

There's a network of brain regions that switches on whenever your mind isn't focused on a specific task — the mental wandering that happens in the shower, on a walk, or lying in bed before sleep. Neuroscientists call it the default mode network, and under ordinary circumstances it's doing something genuinely useful. It's the system behind what's known as *autobiographical memory* — the sense of your own life as a continuous story. It's involved in making sense of experiences, turning what's happened into something you understand rather than just something that occurred. This is the process that lets you learn from an event and fold it into how you see yourself and the world.

The trouble starts when this system gets caught in a loop: reactivating the same material (usually upsetting stuff) repeatedly but without ever reaching the resolution that would normally allow it to file the experience away and move on. 

Why? Well, we need to look right back and employ some evolutionary logic. You're safe in your cave, but you've narrowly missed becoming lunch because of something you did or didn't do. So you repeatedly keep thinking of the thing with the big teeth that jumped out at you whilst you were picking mushrooms. By continually reviewing a social misstep, a threat, or a mistake would once have had genuine survival value — better to over-rehearse the danger and the errors than to under-prepare for the next one. The system that produces rumination is, in a sense, an overzealous but well-intentioned security review, replaying the footage looking for something useful, and simply failing to notice that it extracted everything useful from the footage several viewings ago.

> *Rumination feels like problem-solving because it uses the same neural machinery as problem-solving. That's precisely what makes it so convincing, and precisely why it's so easy to stay stuck in for years without noticing that nothing is actually being solved.*

## Why men are prone 

Rumination isn't exclusive to men, but the male version has some specific and recognisable features worth naming.

**It very often runs through anger and injustice rather than sadness.** The article on [anger as a secondary emotion ](https://www.drjerrykennard.com/anger-as-a-secondary-emotion/)established that men frequently convert more vulnerable feelings into anger before those feelings reach conscious awareness. Rumination provides an ideal engine for this — the 2 am replay of "the way he spoke to me in that meeting" is very often not really about the meeting. It's the mind circling something considerably more vulnerable — feeling disrespected, feeling inadequate, feeling unseen — dressed in the more acceptable costume of righteous grievance, which is a great deal easier to sit with than the raw feeling underneath it.

**It tends to be hidden rather than disclosed.** Women who ruminate are, on average, considerably more likely to talk about it — with friends, with a partner — which, while it has its own downsides covered below, at least makes the process visible to someone. Men's rumination happens privately, silently, usually while doing something else entirely, which means it goes largely unaddressed until it's produced a genuine problem: persistent poor sleep, a short temper nobody can quite account for, or a slow, grinding low mood that gets labelled "stress" because "rumination" was never part of the working vocabulary.

**And it interacts badly with the specific male tendency toward self-reliance.** The instinct, once someone notices they've been stewing on something for weeks, is to try to think their own way out of it — which is precisely the strategy least likely to work, because more thinking is exactly what got them there in the first place. This connects directly to the article on [why men ignore physical symptoms](https://www.drjerrykennard.com/why-men-ignore-physical-symptoms/): the same reflex that delays a trip to the doctor also delays the recognition that "just thinking it through" has, in this specific case, become the problem rather than the solution.

## What rumination costs

Rumination has been established as one of the strongest known predictors of both the onset and the duration of depressive episodes — not simply a symptom of low mood but an active mechanism that prolongs and deepens it. It has a similarly strong relationship with anxiety, and the two tend to feed each other: rumination worsens mood, and worsened mood produces more rumination.

It reliably disrupts sleep — the 2 am version of this is not a coincidence. Lying in bed with nothing to distract the default mode network is precisely the condition under which rumination runs most freely, and the sleep loss it produces then further impairs the prefrontal regulation that would otherwise help interrupt the loop the following day, which is exactly the vicious cycle described in the article on [sleep and mental health.](https://www.drjerrykennard.com/sleep-and-mental-health-what-happens-when-it-goes-wrong/)

It measurably impairs the actual problem-solving it masquerades as. Studies of people mid-rumination show reduced performance on genuine cognitive tasks — the mental bandwidth being consumed by the loop isn't available for the things that would actually help.

And there is a documented physiological cost. Sustained rumination is associated with prolonged cortisol elevation — because the body's stress response, unlike the mind, cannot tell the difference between a threat actually happening and a threat being vividly replayed for the fortieth time. My article on [what chronic stress does to the male body over time ](https://www.drjerrykennard.com/what-chronic-stress-does-to-the-male-body-over-time/)covers exactly this mechanism: the heart, the gut, and the immune system do not know that the meeting is over. As far as the nervous system is concerned, if you're replaying it with the same intensity, it might as well still be happening.

## What helps   

> "Just stop thinking about it" is one of the least effective interventions available, because it's the advice most men have already tried and found useless.

**Name it as rumination.** Okay, it sounds almost too simple, but it is one of the more consistently evidence-supported first steps. If you can get to the point of thinking **"this is rumination, not problem-solving"**, it activates a different kind of processing than simply continuing to sit inside the thought. It's the same naming principle that runs through nearly every article on this site, applied here to interrupt a loop rather than to identify an emotion.

**The - is this helpful question.** If yes — genuinely yes, not "I could theoretically send an email at 2 am" — then the thought has moved from rumination into actual problem-solving, and it's maybe worth engaging with properly, ideally with a pen and paper rather than purely in your head, where thoughts tend to circle rather than resolve. If no — and the honest answer is almost always no — then the thought has nothing further to offer, and continuing to engage with it is not diligence. It's the stick, being fetched again.

**Don't try to think your way out.** Rumination thrives in low-stimulation, unstructured moments — lying in bed, driving on an empty motorway, sitting quietly after everyone else has gone to sleep. Genuinely absorbing activity that requires some attention (a hobby) occupies the same cognitive bandwidth the rumination needs and, in doing so, tends to break the loop far more effectively than trying to reason your way out of it does.

**Schedule a "worry window".** A [worry window](https://www.nhs.uk/every-mind-matters/mental-wellbeing-tips/self-help-cbt-techniques/tackling-your-worries/?ref=drjerrykennard.com) is a well-evidenced CBT technique: rather than fighting rumination every time it arrives, which tends to give it more attention rather than less, you allow yourself a specific ten or fifteen minutes at a set time each day to think about whatever's been circling — properly, with a notebook if it helps — and when it arrives outside that window, the deal is simply "not now, you have your slot later." This sounds almost too straightforward to work. The evidence suggests it genuinely does, largely because it removes the exhausting, constant low-grade battle against the thought and replaces it with a specific, bounded container.

**Move your body.** This is one of the most consistently replicated findings in this area — physical exercise, particularly the kind that involves genuine attention to physical sensation, measurably reduces rumination.

**Don't be the dog with the stick**  
Rumination feels like diligence. It feels like taking something seriously, like refusing to let an unresolved matter drop. That's precisely the disguise that makes it so persistent, and precisely why so many capable, conscientious men spend years caught in it without recognising what it actually is.

But the dog with the stick isn't learning anything new on the fortieth fetch. It's simply doing the thing it knows how to do, because the loop is familiar, it feels like fun, and it believes you're enjoying it too.

The issue you've been ruminating over may (or may not) have taught you something, but it has nothing left to teach you at constant replay. If there was anything to learn, you'd have picked it up at the first, second, or possibly third time you turned it over. Everything after that is just the stick, coming back again.

Been thinking about something? Got a technique that works for you? Feel free to comment