It started, as it always starts, with insomnia.
The rollout has me wound up in ways I can't fully explain at midnight when my brain decides to replay every decision of the past month in excruciating detail. I put the phone down. I stared at the ceiling. The ceiling had nothing to offer. I picked the phone back up. I opened TikTok with the specific intent of watching three calming videos and then sleeping, which is a plan that has never once worked for me and which I keep attempting like it might this time.
The first video was someone's hamster doing something endearing. The second was a cooking video. The third was a video about expanding floss, dental floss that expands into a wider ribbon when you pull it through your teeth, apparently, a design innovation I had never thought to want and suddenly understood completely. I watched that one twice. Then I watched the one after it, which was a different expanding floss video. Then I watched a video about a tool that sands wood in a satisfying circular pattern. Then a video of someone cutting soap. Then kinetic sand. Then something with magnets. Then it was 3:17am and I was down a satisfying-product rabbit hole that the algorithm had built specifically, personally, for me at this hour.
I posted about the expanding floss on @vixenraefr because I needed someone else to know this existed. The response was, people KNEW. People had opinions about expanding floss. There is an entire subculture of people who have very strong feelings about floss texture and this information has changed me.
why 3am has its own algorithm
I have thought about this more than is probably warranted. But here is what I've noticed: the TikTok algorithm at 3am is delivering something qualitatively different from what it serves at 3pm. During the day, the content is more socially legible. It's the stuff you'd be comfortable telling someone you watched. A funny video, a recipe, a creator you follow, a trending audio. Normal human content consumption.
At 3am, the algorithm seems to figure out that you've gone somewhere specific. That you're in the insomnia brain state, tired but not sleeping, slightly disconnected from regular judgment, emotionally porous in the specific way that exhaustion creates. And it serves accordingly. Satisfying textures. Things that expand or compress or transform. The oddly specific product demo for something you didn't know existed. The ten-minute deep dive on the history of a specific type of latch. Someone's detailed tutorial on a hobby that could not have more than eight thousand practitioners nationwide but is filmed with the care and lighting of a prestige documentary.
It's like the algorithm understands that your daytime brain would scroll past half this stuff. But your 3am brain is defenseless against a man enthusiastically explaining the mechanics of expanding dental floss. Your 3am brain is deeply, specifically interested in this man and his floss and his knowledge.
the satisfying-content industrial complex
The expanding floss fell into what I think of as the satisfying-content genre, videos where the primary function is to produce a specific pleasurable sensation in the viewer through visual and auditory stimulation. The kinetic sand. The soap cutting. The slime. The extremely pressurized water cleaning dirty surfaces. The before-and-after restoration videos. The metal being bent into perfect curves. These videos are all, at some level, doing the same thing: giving your brain a pattern-completion experience without requiring anything from you.
There's something compelling about this, especially for people like me whose work involves a lot of things that don't have clean resolution. A song is never done, just abandoned. The album is out but the response keeps coming in and it's not a simple story you can finish. The relationship between creative work and the person making it is permanently unresolved, always in process. You live in a cloud of ongoing.
The satisfying video is: here is a problem (dirty surface, rough wood, tangled floss situation) and here is its complete resolution (clean surface, smooth wood, dental hygiene achieved). Beginning, middle, end. Closed loop. The visual equivalent of finishing a sentence. I think this is why these videos hit harder when you're tired, the tired brain is craving resolution and the satisfying content provides it in a format that requires nothing in return.
I'm not sure whether that's healthy or unhealthy. I think it's just what it is. The brain wants what it wants at 3am and at 3am it apparently wants to watch someone floss enthusiastically with expanding dental floss.
a taxonomy of what I watch when I can't sleep
For the record, in roughly chronological order of when in the insomnia arc they appear:
Phase one (10pm to midnight, early-stage restlessness): Normal content. Things I'd watch anyway. Maybe something calming, a slow-food cooking video, a walking-in-a-city video where someone just walks and films, a gentle nature thing.
Phase two (midnight to 1am, not-quite-giving-up): The slightly weirder recommended content starts entering the picture. Someone's collection of vintage items. A detailed explanation of a niche historical thing. The occasional oddly compelling interview format. This is the phase where I might actually learn something that I'll remember the next day.
Phase three (1am to 2am, accepting my fate): Full-on satisfying content. This is where the expanding floss lives. Kinetic sand. The soap. The ASMR-adjacent stuff. Videos of things being organized into extremely clean systems, which my apartment is not and never will be but watching it is extremely pleasant. Occasionally a video about a specific artisan craft that makes me think, briefly, that I might take up woodturning. I will not take up woodturning. But at 2am it seems possible.
Phase four (2am to 3am, bargaining): This is when I start watching things I'll have to mentally explain to myself the next morning. Expanding floss discovery hour. A twenty-minute video about the history of a very specific type of bolt. A tutorial on something I don't need to do and have no tools for. The algorithm is now fully in control and I am merely a passenger.
Phase five (3am onward, somewhere past caring): At this point it's not really about content. It's just about the light. I should put the phone down. I know I should put the phone down. I put the phone down and lie there for three minutes and pick it back up. Someone in the comments of the expanding floss video is having a fierce debate about whether it actually cleans better than regular floss and I need to know how this resolves.
what the algorithm knows that I won't admit at noon
The 3am algorithm rabbit hole and I have come to a kind of peace: the algorithm is not making me watch weird stuff. It's surfacing stuff I'm actually interested in that I wouldn't give myself permission to watch during the day because it feels too unproductive, too niche, too hard to justify.
I genuinely find the mechanics of expanding dental floss interesting. Not as a product, but as a design problem, someone looked at floss and thought "what if this was wider" and then figured out how to make that happen and now millions of people's mouths are cleaner for it. That's a small creative problem with a neat solution and I find that satisfying in the same way I find a well-resolved bridge section in a song satisfying. Things clicking into their correct shape.
At noon, I have tasks. Emails. The album rollout and the social media and the metadata problem I keep not dealing with. I don't give myself permission to go down a floss rabbit hole. At 3am there are no tasks and the only form of permission that exists is exhausted curiosity, and apparently what exhausted curiosity wants is expanding dental products and the complete kinetic sand archive.
Maybe that's what insomnia is for, actually. The brain's way of giving itself the weird education it didn't have time for during the day. I haven't solved my insomnia and I probably won't tonight. But I have learned an unreasonable amount about expanding floss, and I regret nothing, and if you want to discuss it I'm available at an unreasonable hour.
There's also something specifically valuable about the product discovery genre at 3am that deserves its own acknowledgment. The algorithm serves you things it knows you won't look for during the day, things that are niche enough that they'd never appear on a search you'd deliberately conduct. A new method of flossing. A tool that does one very specific job. A material you didn't know existed that turns out to be exactly what you needed for a thing you were trying to do. These are the kinds of discoveries that happen by accident when you're in a wandering mental state, and that state, exhausted, permissive, following one thread without a destination, is genuinely useful for finding things you wouldn't have found on purpose. Some of my best small ideas have come from 3am algorithm drift. The brain is doing something when it follows strange content late at night, even if it also desperately needs to sleep.
The expanding floss, specifically: I did order it. I use it now. My dental hygiene has never been more satisfying as a process and I'm not sure what that says about me except that I'm open to improvement in unexpected places and I remain grateful for the algorithm's late-night generosity. If you find yourself awake at 3am and TikTok shows you something strange and specific that you can't stop watching: that might be the thing you needed to know. Or you might just be tired. Both are possible. The algorithm doesn't always know the difference and honestly neither do I.
Follow @vixenraefr. I'll probably post about something equally specific at 2am this week. Biscuit is here tonight which is helping but not enough. Goodnight and may your dental hygiene be excellent.