First up: HKS stands for “Hikikomori Sprint.”
These are work sprints were I live in the office for a several days — sometimes weeks — with a singular goal of getting something finished. During this time, I shower at a local sento (traditional Japanese bathhouse), drink lots of Huel and soymilk, and for dinner, either eat from a restaurant or conbini or do a DIY in the office microwave. Sometimes I go home for laundry, but keep these trips to a bare minimum.
Recently, I did a sprint from August 1 – 15, with the intention of finishing the first product at SANPRAM that is set up for mass adoption (as opposed to a super niche thing), called DenseWiki.
The task was simple:
- Rip DenseWiki out of the scientific publishing platform it was initially built inside of, and make it its own thing.
- Ship a Chrome extension login experience that was both seamless and elegant.
- Ship a bunch of gamification features.
- Redo the entire email stack so that notifications never land in spam.
The hard deadline was August 15. By August 15, the system not only had to be finished, but the chrome extension had to have been submitted and approved by the Chrome store. So essentially, my deadline was August 13 because I had to leave a couple days of buffer for this.
The Result
Phew — I accomplished all my tasks, and I met my deadline.
In fact, I was hell-bent on finishing most of the core work by August 10, leaving 3 days for touch-ups and refinement. But that almost never happens. I kept testing and tweaking / shipping things.
At 3am on August 15 (i.e. late night on August 14), I sent an email to our investors with a link to try out the product.
Yay!
How it Went
Tools
I’m a big believer in tools. For this sprint, I experimented with a set of tools that ranged from real to abstract.
The first and most important was the compelling scoreboard I designed for myself. I believe it was a game-changer.
In the green sticky note, which I always had on my screen, every “O” represents a full hour of deep work. A “P” is a half hour. Weeks are demarcated by a “.”

At the end of 15 days, my total tally was 61.5 hours:

I also put up some physical sticky notes on my extended monitor, as totems to remind myself to be present, and to have confidence.
The other thing that was super helpful was having ChatGPT as my daily coach and project planner, and having Gemini Pro as my programming assistant. I paid for both of these, and I can now firmly vouch for both. Gemini is the better model imo, but ChatGPT’s memory feature is excellent too.
For my desk setup, having a laptop stand, a mouse, and external display was good enough. I also went and bought a shaker bottle from Don Quijote late at night to mix my Huel in.
Here’s what my desk looked like on the last day, after the launch:

I’ve also now showered at every sento and eaten at every Indian restaurant within a mile. It’s not that I have a particular fondness for Indian cuisine, but it’s much more vegan / vegetarian friendly and I can always get legumes, which makes for a protein-rich meal. I’ve also started drinking a litre of soy milk every day (very affordable in Japan).

As for sleep, I’ve picked a couch to sleep on that is pretty stiff / hard. It’s been an interesting experience — I’ve learned that I can sleep fairly soundly, but I tend to wake up sooner without feeling tired.
I’ve realized that I actually genuinely like this new way of working.
It’s exhilarating. I feel truly alive, like I’m doing something meaningful and headed towards something exciting. My mental health is quite related to how much effort I’m putting out, and doing deep work + hard stuff in general is like extra oxygen for my brain.
Periods like this also meet my bar for “time well served” — i.e. if decades are made up of days and weeks, then I’d love for sprint days to become the baseline for my future decades. How much I could accomplish!
At the same time, doing sprints also helps me be more present and detached. I believe that whenever I feel stressed or worried about something, it’s usually because I’m putting something off. Either it’s a decision, or a task. But when I’m in the middle of a sprint, that feeling goes away.
In essence, I feel the most relaxed when I’m going at breakneck speed.
I also wasn’t completely alone — I was in a co-working space, and I also did regular virtual “co-working” calls with a schoolteacher in the UK who I’ve become friends with through Focusmate.
Aftermath
On August 15 (when the streak ended), I went home for half a day or so, and then immediately ended up coming back to the office next day, and spent an evening fixing bugs and incorporating some quick initial feedback.
After that, over the next 2-3 days (17-18 Aug), I chilled at home for a bit. Read some old books. Surfed the internet. Even scrolled the LinkedIn feed, which has now become a fake collage of marketing “content” and armchair thought leadership that I’ve come to find distasteful.
Being at home and “chilling” was really… boring. I felt a bit empty inside.
Finally, on the 19th, I came right back to the office and stayed overnight, to start preparing for the next sprint – a post-launch sprint focused on marketing / growth.
(I’ll talk about the next sprint in a future post. Because it hasn’t actually started yet.)
Future thoughts
Needless to say, I’ve come to like this lifestyle for now. But currently I’m a solo operation, so I can take the luxury of sprinting and chilling.
But once I have a team around me, in person, I do wonder how a lifestyle like this could be continued or adapted. I guess it’s too early to say.
I want to be a scholar and creator, reading and learning a lot, staying very close to problems, and proposing solutions that don’t exist in the world. I can do many things, but I can’t do everything.
I would love to find people who are self-starters and who can pull their own weight, and build a team with that culture. Are they going to push themselves to figure things out and take ownership?
What I imagine might be really cool is, if we end up working in a kind of continual zone where we first figure out a challenging project, divide the work among ourselves by ourselves (true owner mindset), and then run off to attack it. Then maybe we could do blue-collar style team huddles where we’d basically ask, “what’s up?” and actually look at the work in progress, openly share thoughts and help each other push through.
OR, we set our own goals and our own cadence of work, in such a way that our individual timelines line up as part of a larger company-level timeline where we make progress on our goals.
Whatever.
I remember watching Jorden Mechner’s video about the development of Prince of Persia, where he mentions sharing an office with other creators where they were all working on their own projects. The kind of culture he described is basically exactly what I’d like to create.
After the experience of two sprints, I think I’m getting the hang of it. My first sprint was very slow. I had very
One thing seems likely: my life will likely be a series of sprints, and I’m looking forward to see how fast I can go.