Why Your Best Ideas Come in the Shower

A reader once wrote to me, slightly embarrassed, that every good idea she had ever had at work had arrived while she was rinsing shampoo out of her hair. She wanted to know whether something was wrong with her desk. Nothing was wrong with her desk. She had simply noticed one of the most common patterns in creative life, and psychology has some reasonably good explanations for it.

The shower is a stand-in. People report the same thing about walking, driving a familiar route, folding laundry and washing dishes. What these moments share is not water. It is a particular kind of mental state.

The incubation effect

In the 1920s the social psychologist Graham Wallas described creative thinking as moving through stages, one of which he called incubation: a period when you stop working on a problem consciously and the solution seems to ripen on its own. For a long time this was mostly anecdote, supported by famous stories of scientists and writers struck by an idea while doing something else.

Since then, researchers have tested it. A typical study gives people a problem that rewards flexible thinking, such as finding unusual uses for a common object, then lets some of them take a break before returning. Reviews of this research have generally found that breaks help on average, particularly for problems where the first obvious approach is a dead end. The effect is real but modest, and it varies with the type of problem and the kind of break.

Why stepping away helps

There are a few overlapping explanations, and they probably all play a part.

Letting go of the wrong path

When you are stuck, you are often stuck because you have committed to one way of seeing the problem. Every attempt follows the same groove. Psychologists call this fixation. A break lets that groove fade a little, so when you come back, or when the problem drifts back into your mind on its own, other approaches have a chance.

Wider associations

Focused attention is narrow by design. It keeps irrelevant thoughts out, which is exactly what you want when filling in a form. But creative solutions often come from linking ideas that do not obviously belong together. When attention relaxes, thoughts move more freely between distant memories, and some of those links turn out to be useful.

The default mode network, in plain language

Brain imaging studies have identified a set of regions that become more active when we are not focused on an outside task: when we daydream, remember, imagine the future or think about other people. Researchers call it the default mode network. Some studies suggest that creative thinking involves cooperation between this wandering network and the networks that evaluate and control attention. It is tempting to say the shower switches on your creative brain, but that oversimplifies a research area that is still developing. A fairer summary is that undemanding moments give the wandering, associative side of thinking more room to run.

Why light tasks beat both hard focus and doing nothing

This is the part I find most useful. In one well-known experiment led by Benjamin Baird and colleagues, people worked on a creative task, then took a break doing either a demanding task, an undemanding one, or nothing at all, before returning. The group given the easy task, which encouraged their minds to wander, tended to improve the most on the problems they had already seen.

A single study is not the final word, and later work has been mixed on some details. But the pattern fits ordinary experience. A hard task fills your attention completely, leaving no room for the problem to drift back. Pure idleness can tip into boredom, rumination or reaching for your phone. A shower, a walk or a pile of dishes is engaging enough to keep you from fidgeting and easy enough to leave most of your mind free. The value of that unstructured space is explored further in why boredom is good for your brain.

There is a related idea in attention restoration theory, which suggests that gently interesting surroundings, especially nature, let tired directed attention recover. A walk in a park may do double duty: rest for focus and space for incubation.

The catch: you have to load the problem first

Incubation is not magic. The ideas that appear in the shower are almost always about problems you have already worked on seriously. The break works on material you have loaded. If you have never wrestled with a question, there is nothing to incubate. The rough rule is: work hard, then step away, then come back.

It also helps to have broad background knowledge. A mind that wanders has to wander somewhere, and the more varied the things you know, the more distant connections are available. That is one quiet argument for reading widely and learning outside your field.

Practical ways to invite the shower moment

1. 1Work on the problem properly first. Write down what you know, what you have tried and where you are stuck.
2. 2Then stop on purpose. Take a walk, cook, tidy or shower, something familiar that needs little thought.
3. 3Leave the phone behind. Podcasts and scrolling fill the space incubation needs.
4. 4Keep a capture tool nearby. A notebook by the door or a waterproof notepad in the bathroom sounds silly until you lose a good idea.
5. 5Sleep on it. Many people find problems look different the next morning, and a night's rest is the longest incubation break of all.
6. 6Return deliberately. Come back to the problem after the break, rather than waiting for inspiration to arrive unprompted.

A gentle warning about wandering

Mind-wandering is not always pleasant or productive. Research has also linked frequent wandering, especially toward worries, with lower mood. The difference seems to lie partly in what you wander toward and whether you chose to step back. Taking a deliberate break from a problem is not the same as being unable to stop dwelling on something painful. If your undemanding moments mostly fill with rumination, that is worth noticing kindly rather than forcing yourself into more of them.

It is also worth knowing that changing context can affect what comes to mind, in both directions. Walking into a new room can make you forget why you came, as described in our explainer on the doorway effect, and the same shift in surroundings that dislodges a plan can sometimes dislodge a fixed way of seeing a problem.

Insight rarely arrives on schedule, but it does seem to prefer an open door and a quiet room.