The idea for Vulpine’s best-selling product came to me while I was shampooing my hair.
Not during a brainstorming session. Not while analyzing market data. Not during a meeting with my co-founder. In the shower, at 7:20am on a Tuesday, with shampoo running down my face and no way to write anything down.
By the time I got out, toweled off, and found my phone, the idea had already started to fade. Not completely — the core was still there. But the specific connection I’d made, the exact way two unrelated concepts had clicked together, was dissolving like a dream you try to describe over breakfast.
I’ve since built a system to prevent this. But before I show you the system, you need to understand why showers are where your best thinking happens. Because once you understand the mechanism, you can engineer more of it.
Your Brain Has Two Modes
Neuroscience distinguishes between focused attention and diffuse thinking. These aren’t metaphors. They’re observable, measurable brain states with different neural signatures.
Focused attention is what you’re doing right now — reading, processing, following a linear argument. Your prefrontal cortex is engaged. You’re filtering information through conscious logic. This mode is essential for execution: writing code, managing spreadsheets, answering emails, making decisions.
Diffuse thinking is what happens when you stop trying. Your prefrontal cortex relaxes. Your brain switches to the default mode network — a set of neural pathways that activate specifically when you’re not focused on a task. This network does something remarkable: it connects information from unrelated domains.
The shower creates perfect conditions for diffuse thinking. The warm water provides gentle sensory stimulation that occupies your conscious attention just enough to prevent it from taking over. The routine of washing requires no cognitive effort. There’s no screen, no notification, no incoming demand. Your focused mind steps aside, and your diffuse network goes to work.
This is why you get ideas in the shower, on walks, during drives, and in those half-awake minutes before sleep. Your brain isn’t idle during these moments. It’s running background processes that your conscious mind would interrupt if given the chance.
Why Founders Systematically Kill Diffuse Thinking
Here’s the problem. The modern founder’s day is designed to destroy diffuse thinking.
Wake up. Check phone. Email. Slack. Calendar. Back-to-back meetings until lunch. Lunch at the desk reading industry news. Afternoon calls. Evening catch-up on the messages you missed. Collapse into bed while scrolling social media. Sleep. Repeat.
Every transition between tasks is a potential diffuse-thinking window — the walk to the coffee machine, the drive between meetings, the five minutes before a call starts. And every one of those windows gets filled with a screen. We’ve optimized away the exact moments where our best thinking would happen.
I noticed this during my consulting years. When I was traveling constantly — flights, trains, hotel rooms — I had ideas constantly. Not because travel is inspiring in some romantic sense. Because travel created enforced gaps. You can’t check email during takeoff. You can’t take calls on a train in a quiet car. You can’t work in the shower.
When I shifted to working from a home office in Graz, the ideas dried up. Same brain. Same domain expertise. Same problems to solve. But zero gaps. Every minute was filled, and my diffuse network never got the chance to run.
The Capture System
Understanding why ideas come in the shower is useful. Catching them before they evaporate is essential.
Here’s the system I’ve used for the last four years:
Layer one: Voice memos everywhere. I keep my phone within reach of every diffuse-thinking zone. Bathroom counter (in a waterproof case). Bedside table. Kitchen counter. Car mount. When an idea arrives, I don’t try to type it or write it down. I hit record and talk for thirty to sixty seconds. Raw. Unstructured. Stream of consciousness. The point isn’t elegance. The point is capture speed.
Layer two: The daily review. Every morning during my 10-minute review, I listen to any voice memos from the previous 24 hours. Most are garbage. That’s fine. I’m panning for gold, not expecting every nugget to shine. The ones that still feel interesting get transcribed into a single running note titled “Idea Inbox.”
Layer three: The weekly sort. During my weekly review, I go through the Idea Inbox. Each idea gets one of three labels: “Act this week,” “Marinate,” or “Archive.” Act items go on my task list. Marinate items stay in the inbox for another week. Archive items get filed and forgotten. The filing matters because ideas that seem useless today sometimes become relevant six months later when a new context makes them click.
Layer four: The connection log. This is the most unusual part and the most valuable. When two ideas from different weeks connect — when a shower thought from March clicks with a customer observation from June — I log the connection explicitly. “Idea A + Idea B = Possible Product C.” These connection entries have produced more value than any deliberate brainstorming session in my career. The product concept that became Vulpine’s second-best seller came from a connection between a customer complaint logged in April and a manufacturing technique I’d read about in July.
Engineering More Diffuse-Thinking Time
Once I understood the mechanism, I stopped waiting for diffuse thinking to happen accidentally and started creating conditions for it deliberately.
The walk protocol. Every day at 2pm, I take a 20-minute walk. No phone. No headphones. Just me and whatever my brain decides to process. This isn’t meditation — I don’t try to empty my mind. I let it do whatever it wants. Sometimes it solves business problems. Sometimes it composes grocery lists. The point isn’t to force ideas. The point is to create the space where ideas can emerge.
The research supports this. A Stanford study found that walking increases creative output by an average of 60%. Not during the walk necessarily — but in the period immediately after. The diffuse thinking that happens during the walk continues to produce results for 15-20 minutes after you sit back down.
The shower upgrade. I extended my morning shower by five minutes. Not for luxury. For thinking time. Those five minutes, with warm water and zero screens, consistently produce more useful ideas than any five-minute block of my focused work time. The ROI of a slightly higher water bill is extraordinary.
The commute replacement. Working from home eliminated my commute, which eliminated one of my best diffuse-thinking windows. I replaced it with a 10-minute drive to a coffee shop where I do my morning revenue tracking. The drive isn’t necessary — I could track revenue from home. But the drive gives me ten minutes of unstructured thinking that the walk from bed to desk doesn’t.
The meeting buffer. I never schedule meetings back to back. There’s always a 15-minute gap. Not for preparation — for nothing. The gap is the feature. Those 15 minutes of doing nothing between calls are when my brain processes what just happened and connects it to what comes next.
The Idea Quality Problem
More ideas isn’t automatically better. Most ideas are bad. The diffuse network doesn’t have a quality filter — it connects things promiscuously, and most connections are useless.
The system handles this through progressive filtering. Voice memo to inbox: that’s a 30% survival rate. Inbox to weekly review: another 30%. Weekly review to “Act”: maybe 20%. The funnel is harsh by design.
But the ideas that survive the funnel are disproportionately good. Better than anything I could produce through deliberate brainstorming. Better than any framework or creative exercise. Because they emerged from genuine neural connections between real experiences, real data, and real observations — connections my conscious mind couldn’t make because it was too busy being logical.
The subtraction audit framework itself came from a shower idea. I was thinking about why so many of the startups I’d worked with were overwhelmed, and the image that arrived — unbidden, fully formed — was of a sculptor removing marble rather than adding clay. That image became a framework. The framework became a chapter. The chapter became a book.
Protecting the Space
The hardest part of this system isn’t the capture. It’s protecting the conditions that produce the ideas in the first place.
Every notification that interrupts a walk. Every podcast that fills a shower. Every scroll that occupies a waiting room. Each one is a small theft of diffuse-thinking time. And unlike focused work time, which you can see on a calendar, diffuse-thinking time is invisible. Nobody schedules “stare out the window for ten minutes.” But that ten minutes might be where your next product, your next pivot, your next strategic insight is waiting.
Protecting your creative energy isn’t just about blocking off morning hours for focused work. It’s about defending the gaps between the blocks. The transitions. The quiet moments. The spaces where your brain does its best work precisely because you’ve stopped telling it what to do.
I’m not asking you to meditate. I’m not asking you to journal. I’m asking you to stop filling every minute of your day with input, and to trust that your brain, given a few minutes of silence and warm water, will produce something worth capturing.
Build the capture system. Protect the gaps. And the next time a brilliant idea arrives while you’re shampooing your hair, you’ll be ready for it.
