Gilles Crofils

Gilles Crofils

Hands-On Chief Technology Officer

Tech leader who transforms ambitious ideas into sustainable businesses. Successfully led digital transformations for global companies while building ventures that prioritize human connection over pure tech.1974 Birth.
1984 Delved into coding.
1999 Failed my First Startup in Science Popularization.
2010 Co-founded an IT Services Company in Paris/Beijing.
2017 Led a Transformation Plan for SwitchUp in Berlin.
November 2025 Launched Nook.coach. Where conversations shape healthier habits

Abstract:

The article argues that remote work can make long desk days look efficient while quietly increasing physical strain because it removes the “boring” built-in office frictions—badge scans, printer trips, elevator waits, small queues—that used to force brief, automatic posture changes; at home, coffee is two meters away, meetings are a click, and lunch happens at the keyboard, so sitting becomes one uninterrupted slab until around 18:30 when the body “files a bug report” (tight neck, raised shoulders, achy low back, outsized post-lunch fog). Rather than treating this as a motivation or workout issue, it reframes it as a defaults-and-environment problem: steps and gym time can coexist with hours-long sitting bouts, and reminders/timers often fail on the busiest days, so the practical fix is to deliberately rebuild “fake queues” using existing cues (kettle boiling, joining a call, sending a long email, exporting/uploading) to prompt 30–90 seconds of standing or subtle, camera-friendly micro-movements (weight shifts, heel-to-toe rocks, ankle pumps, a slow exhale), plus simple home tweaks that add small friction (keep water in the kitchen, charging cable in another room, notebook on a high shelf) and a consistent “landing spot” after calls to recreate transition buffers. It also offers social/Zoom ergonomics (stable camera, wider framing, hide self-view, and a one-line explanation like “I’m going to stand for this, still here”), cautions against rigid all-day standing in favor of alternating positions, and suggests judging success by boring signals—less end-of-day stiffness, fewer neck/back complaints after stacked meetings, smaller energy slumps, and easier switching out of work mode—while noting that alarming symptoms warrant medical advice.

A 10-hour desk day can look weirdly “efficient” from the outside. Coffee is 2 meters away. Meetings are a click. Lunch happens at the keyboard. Then 18:30 arrives and the body sends the usual bug report. Tight neck. Shoulders up near the ears. Lower back complaining. That post-lunch fog that feels a bit too strong for the same sandwich. None of this is a personal failure. It is what happens when work removes the small, boring interruptions that used to break sitting without asking.

I’ve done this across Beijing offices, then Berlin, and now in Lisbon: the calendar wins, the spine loses.

  • This is about rebuilding a few missing “queues” on purpose, without turning your flat into a gym.
  • The target is simple: fewer long, uninterrupted sitting blocks.
  • The method is even simpler: use cues already in your day, not timers and guilt.

The queue you forgot about

Queues were accidental posture variety

Badge scan, elevator, coffee machine, printer, microwave, reception desk. Nobody called any of this a break. Still, it inserted upright minutes into the day with zero motivation required. The office didn’t make anyone fit. It just made people less seated by default, which matters when “sedentary time” is basically any waking time spent sitting or lying, and a “break” is simply an interruption of that (Tremblay et al., 2017).

Standing in a queue isn’t heroic. It’s just physically different. Feet shift. Ankles move. Calves do a bit of work. Shoulders drop when the hands stop typing. It’s boring. And that’s the point. Short microbreaks in desk work consistently show boring wins: less discomfort, less fatigue, without tanking performance (Kim et al., 2017).

The systems part matters more than the posture trivia. In an office, friction happens to you. At home, everything is tuned for throughput. Coffee is 2 meters away. Meetings are a click. Food shows up like magic. Great for shipping work. Bad for movement variety. Defaults beat willpower because humans are lazy in a perfectly reasonable way. Workplace sitting research keeps landing on the same thing: environment changes tend to move behavior more than reminders alone (Shrestha et al., 2018). Your body does not care about throughput. It cares about changing positions.

When convenience makes sitting invisible

Speed wins and your legs lose

Remote work didn’t “make us sedentary” in one dramatic way. It just removed the tiny transitions.

Sometimes it’s as dumb as this: you used to walk to a meeting room, get there a bit early, wait 40 seconds, walk back. Now it’s click → talk → click → next call. Slack didn’t replace a walk; it replaced the shoulder tap and the little stand-up that came with it. Screen share didn’t replace collaboration; it replaced the small trip to someone’s desk. Each swap is a win in speed, and a loss in upright punctuation.

Long sitting bouts become the default

It is totally possible to train, hit steps, and still sit from 09:30 to 13:00 because the day is a wall of calls. Bout length matters, not only daily total. Prolonged sedentary patterns show up as a risk marker in device-based observational work (Diaz et al., 2017). WHO guidance stays intentionally plain: limit sedentary time and replace it with movement when possible (WHO, 2020). No magic interval. Just less unbroken stillness.

Reminders die on the days they are needed

Timers sound clean until the day gets heavy. Prompts start helpful, then feel like spam, then become background noise. If the system requires attention, it tends to fail exactly when attention is gone.

Also, personally: if I miss one day, I’m weirdly good at missing the next one too.

Steps are not the same as punctuation

Pattern beats totals more often than expected

Long uninterrupted sitting is like a server with a giant lock timeout. Nothing “breaks”, but everything gets sticky, slow, and weirdly fragile.

A break in sedentary time is any non-sitting interruption, even brief (Tremblay et al., 2017). That’s why the office queues mattered: they were tiny, frequent interrupts.

One common misread is thinking standing still equals moving a little. In controlled trials, frequent light-walking interruptions beat uninterrupted sitting for post-meal glucose and insulin. The typical protocol is unglamorous: about 2 minutes of easy walking every 20 to 30 minutes. That’s a lab schedule, not a life rule (Dunstan et al., 2012).

Standing still does help—especially as a delimiter. Alternating sit and stand tends to be friendlier for low-back discomfort than staying planted in one position forever. Standing marathons are not the assignment.

Exercise still matters, obviously. It just doesn’t reliably break the 3-hour sitting slab created by back-to-back calls. Workouts build capacity; fake queues break the blocks.

A win condition for desk days that does not need a new identity

The real target is fewer long sitting slabs

The day doesn’t usually fail because of “not enough workouts”. It fails because sitting becomes one continuous default until the body starts throwing small errors.

Neck and upper-back tightness that ramps quietly. Hips that feel rusty on first steps. Post-lunch fog bigger than the lunch. This is a pretty normal output of long stillness blocks, not a sign you are broken. Microbreak research suggests short breaks can reduce discomfort without wrecking performance (Kim et al., 2017). Standing is not the workout. It’s the cheap delimiter between tasks, like adding commas so the paragraph can breathe.

The practical move is to rebuild fake queues at home, on purpose, with low friction.

Rules that recreate queues without an app

Fake load time that forces you upright

If something would have made you wait in an office, recreate a tiny wait at home. When the kettle starts, a meeting link opens, a file exports, a big email sends, a dashboard loads. Stand 30 to 90 seconds and let the cue do the work. The if-then setup is the point here (Gollwitzer & Sheeran, 2006).

Triggers that often work

  • kettle or coffee machine
  • joining a call
  • export or upload
  • send on a long email
  • app login or dashboard refresh

No heroic stretching. Just upright.

Two anchor cues that survive calendar chaos

Join the meeting, then stand for the first 60 seconds. Camera optional. It breaks the sit-to-sit chain that can run all morning, and it still counts as a break in sedentary time (Tremblay et al., 2017).

When the meeting ends, take 20 to 40 seconds for a tiny room change. Close the tab, refill water, open a window. Not theatre. Just an upright transition that helps create a boundary when work wants to glue itself to the chair.

My wife is a trainer and nutritionist; she still has to remind me to sit straight, and I last about three minutes. So yes, external cues do help.

Optional extras (only if they feel natural)

  • Passive time defaults to upright: listening on a call, waiting for others to join, reading a doc.
  • Small movements that don’t look like a workout: weight shifts, heel-to-toe rocks, ankle pumps, one long exhale.
  • Match posture to the meeting: stand for shallow status syncs; sit for messy decision calls (standing can change how people elaborate).

Movement that stays forgettable on camera

Keep it boring for everyone else

On a 6-person gallery view, motion steals attention even when nobody wants it to. Vision research is blunt: moving things pull the eye automatically (Franconeri & Simons, 2003). So big gestures and dramatic chair gymnastics become a meeting event. The goal is boring movement nobody remembers 10 seconds later. Subtlety is not weakness. It’s social ergonomics.

A few setup choices help

  • stabilize the camera so it does not wobble when you touch the desk
  • widen the framing so standing is less visually loud
  • keep bigger adjustments for transitions like joining and leaving
  • slow is better than twitchy
  • consider hiding self-view if it increases self-monitoring (Bailenson, 2021)

If someone notices, one sentence saves you from a TED talk

“I’m going to stand for this, still here.”

Home queues without turning your flat into a gym

Small friction that pays you back

Don’t add new “movement tasks”. Move the stuff you already use so it costs 6 extra steps and buys 20 seconds upright. Defaults beat motivation, especially on heavy days. Evidence trends in workplace sitting are similar: environment changes tend to beat education-only nudges (Shrestha et al., 2018).

Simple swaps

  1. Water lives only in the kitchen so every refill is a tiny walk.
  2. Charging cable lives in another room so plugging in is a micro-trip.
  3. Notebook lives on a shelf you must stand to reach so writing 1 thing includes a sit-to-stand.

Guardrail. Replacing sitting with rigid standing all day can turn into locked knees and concrete feet. Alternation and movement matter more than racking up standing hours.

A landing spot that replaces the elevator wait

Pick 1 physical threshold and reuse it. A spot by the front door, or next to a window you can reach in 10 seconds. After a call, stand there for 60 seconds. Not for virtue. It’s the missing buffer offices forced between rooms, and it can help role transitions when work wants to smear into everything.

Keep the minute practical

  • refill water
  • open the window
  • put the headset away

On the nights where work runs late (yes, past midnight happens), that one minute at the window is sometimes the only “commute” the day gets.

How to know it works without tracking your life

Boring signals that are actually progress

If the day is still a 10-hour chair festival, “working” won’t look like a new body. It looks like less stiffness debt and fewer energy cliffs. Microbreak studies mostly report boring wins like lower discomfort and fatigue, not miracles (Kim et al., 2017). Signals to watch for

  • standing up at 18:30 feels less rusty
  • fewer neck or low-back complaints after stacked meetings
  • smaller post-lunch slump with the same lunch
  • less end-of-day glued-to-chair feeling
  • easier switch into non-work mode because transitions exist again

If you’re the kind of person who already wears a Polar H10 or a cheap Decathlon sport watch, you might notice it indirectly: fewer late-day stressy spikes, or sleep that feels a bit less “wired” after a call-heavy day. Not a requirement, just a quiet side effect.

Stop rules that keep this responsible

If there is progressive weakness, persistent numbness, severe pain, new bladder or bowel issues, or anything that feels alarming, this is not a missing-queue problem and it is worth medical advice. For the usual desk stiffness, the idea stays simple. Offices gave movement by accident. Home can rebuild a small part of it on purpose.

A 10-hour desk day is not a character flaw. Remote work just removed the tiny queues that used to force posture variety, so sitting turns into one long slab until 18:30 and the body files a ticket. The useful shift is to stop treating movement like a workout problem and start treating it like a default-setting problem.

Steps and gym time still matter, but they don’t always break the long sitting bouts that make necks cranky, backs grumpy, and lunch feel heavier than it was. Fake queues help because they ride on cues already in the day. And it’s mildly annoying, but true: “efficient” days are often the worst ones for your body, because nothing ever makes you stand up by accident.

Kettle on, meeting starts, meeting ends, file exports. Stand 30 to 90 seconds, do a boring micro-move, then sit again. No timer guilt.

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25 Years in IT: A Journey of Expertise

2025-

Nook
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Product Lead
Building the future of health coaching. Leading product development and go-to-market strategy for a platform that makes personal wellness accessible through natural dialogue.
Making health coaching feel like talking to a friend who actually gets you.

2024-

My Own Adventures
(Lisbon/Remote)

AI Enthusiast & Explorer
As Head of My Own Adventures, I’ve delved into AI, not just as a hobby but as a full-blown quest. I’ve led ambitious personal projects, challenged the frontiers of my own curiosity, and explored the vast realms of machine learning. No deadlines or stress—just the occasional existential crisis about AI taking over the world.

2017 - 2023

SwitchUp
(Berlin/Remote)

Hands-On Chief Technology Officer
For this rapidly growing startup, established in 2014 and focused on developing a smart assistant for managing energy subscription plans, I led a transformative initiative to shift from a monolithic Rails application to a scalable, high-load architecture based on microservices.
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2010 - 2017

Second Bureau
(Beijing/Paris)

CTO / Managing Director Asia
I played a pivotal role as a CTO and Managing director of this IT Services company, where we specialized in assisting local, state-owned, and international companies in crafting and implementing their digital marketing strategies. I hired and managed a team of 17 engineers.
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SwitchUp Logo

SwitchUp
SwitchUp is dedicated to creating a smart assistant designed to oversee customer energy contracts, consistently searching the market for better offers.

In 2017, I joined the company to lead a transformation plan towards a scalable solution. Since then, the company has grown to manage 200,000 regular customers, with the capacity to optimize up to 30,000 plans each month.Role:
In my role as Hands-On CTO, I:
- Architected a future-proof microservices-based solution.
- Developed and championed a multi-year roadmap for tech development.
- Built and managed a high-performing engineering team.
- Contributed directly to maintaining and evolving the legacy system for optimal performance.
Challenges:
Balancing short-term needs with long-term vision was crucial for this rapidly scaling business. Resource constraints demanded strategic prioritization. Addressing urgent requirements like launching new collaborations quickly could compromise long-term architectural stability and scalability, potentially hindering future integration and codebase sustainability.
Technologies:
Proficient in Ruby (versions 2 and 3), Ruby on Rails (versions 4 to 7), AWS, Heroku, Redis, Tailwind CSS, JWT, and implementing microservices architectures.

Arik Meyer's Endorsement of Gilles Crofils
Second Bureau Logo

Second Bureau
Second Bureau was a French company that I founded with a partner experienced in the e-retail.
Rooted in agile methods, we assisted our clients in making or optimizing their internet presence - e-commerce, m-commerce and social marketing. Our multicultural teams located in Beijing and Paris supported French companies in their ventures into the Chinese market

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