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 explains why a sore, dry, “lumpy,” or tight throat often shows up right after the last meeting of a long screen-heavy workday: it’s usually not one bad moment, but an accumulation of tiny “missing inputs” caused by camera-on stillness and deep focus blocks that quietly reduce normal maintenance behaviors like swallowing and micro-movement while encouraging jaw bracing, subtle mouth breathing, stress, and dry air. It notes how common quick fixes—throat clearing, menthol mints, and coffee—can feel immediately helpful yet keep irritation loops going (especially repeated throat clearing, treated in cough guidance as a cycle to interrupt), and it frames the problem as a systems/workday effect rather than a personal failing, while acknowledging evidence limits (e.g., swallow frequency during video calls isn’t well-studied, though parallels to reduced blinking in screen work are plausible). The piece offers a deliberately tiny, “boring” intervention that fits between meetings using seam-based cues instead of timers: briefly let teeth separate, soften the tongue, do one easy swallow, then one slow, quiet exhale—small mechanical lubrication plus a downshift signal—along with light-touch tracking (like noticing if your water glass is still full late afternoon) that reflects the author’s metrics-oriented bent (physics background, interest in HRV/sleep). Finally, it stresses guardrails and medical red flags (painful/progressive symptoms, true swallowing difficulty, bleeding, weight loss, neck mass, significant reflux, or voice changes lasting weeks) so routine “desk throat” isn’t confused with something that needs evaluation.

Your calendar looks normal. Meetings, focus blocks, maybe a desk lunch that was supposed to be “quick”. You barely move all day, partly because you’re busy, partly because camera-on calls quietly punish fidgeting. Water gets postponed because breaks have a re-entry cost. And then at 18:00, right after the last call, your throat decides to file a complaint.

That timing is usually a clue. It often isn’t a single bad moment, it’s the sum of tiny missing inputs. Fewer swallows. A jaw that stayed “ready” for hours. Mouth breathing you didn’t notice. A little stress. A little dry air. Nothing dramatic, just enough friction to make the end of the day feel scraped, tight, and weirdly effortful.

This article is here to make that pattern less mysterious and less personal. Not “what’s wrong with you”, more “what’s the system doing all day while you’re busy being professional”. I’m biased toward logs (physics brain), but we’ll keep it light.

Here’s what you’ll get:

  • The boring symptom pattern that shows up after long screen days, and why it clusters at the end
  • The coping stack that feels helpful fast (throat clearing, mints, coffee) and how it can keep a loop running
  • A simple model for what’s missing during calls and deep focus blocks, especially swallowing and micro-movement
  • A tiny “12 second patch” that fits between meetings without turning your throat into a new project
  • Guardrails and red flags, so normal desk-throat doesn’t get mixed up with things that deserve a real checkup

No perfection required. Just a few small configuration changes, based on how real workdays actually behave.

When the day ends your throat starts complaining

The symptom that waits until the last meeting ends

The day looks fine on paper. A calendar wall of calls, a couple long focus blocks, a code review where you barely move except for the trackpad. Camera-on meetings add that extra stillness, because nobody wants to be the person constantly shifting like a bad webcam tripod.

Mechanically, the “end of day” part often isn’t mysterious: you’ve had hours of less swallowing, more jaw holding, and fewer little posture changes, so the tissue gets drier and more easily irritated. Bailenson (2021) describes how video calls increase self-monitoring and reduce mobility, which matches this static pattern. There’s also an evidence boundary here. There aren’t many direct studies measuring swallow frequency during video calls, so “people swallow less on camera” is plausible, not settled.

What the logs actually say

The end-of-day version tends to be boringly consistent.

  • Dry mouth that shows up late, even if the morning felt normal
  • Swallow feels sticky, like it needs a 2nd attempt
  • “Lump in the throat” sensation, more annoying than painful
  • Voice feels scraped or thin after back-to-back calls
  • Jaw fatigue after long listening while staying “neutral” on camera
  • Neck stiffness that seems to connect to the throat
  • Throat clearing that starts as “just once” and becomes a loop
  • A tight, narrow feeling when trying to speak louder
  • Recovery lag, it fades overnight, then returns the next workday

These map well to how voice and throat symptoms are described in tools like the Vocal Tract Discomfort Scale (Mathieson 2009) and the end-loaded pattern in the Vocal Fatigue Index (Nanjundeswaran 2015). Not a diagnosis. Just structured noticing.

The quick fixes that feel helpful and keep the loop running

The default coping stack is usually coffee, a mint, a few throat clears, and 20 seconds of neck stretching while the next meeting loads. It can give fast relief, mostly because it changes sensation quickly. But it doesn’t restore what was missing for 8–10 hours.

Throat clearing is the classic fix that can become part of the problem. It’s basically a retry button: brief relief, then more irritation, then more retry. Menthol is sneaky too. It makes things feel cooler and “fixed” even when the surface is still irritated. Coffee is also more nuanced than the “dehydration in a cup” story. It may still correlate with dryness for some people, but the moral panic is not evidence. (CHEST 2016; ERS 2020; McKemy 2002; Peier 2002; Maughan & Griffin 2003; Armstrong 2005; Killer 2014)

So the useful move is a reframe. Less posture perfection, more missing micro-inputs.

The missing micro-inputs

Swallowing is background maintenance. It keeps things lightly lubricated and moving in the mouth and throat. In quiet rest, healthy adults swallow more than most people would guess, commonly reported around 0.5–2 swallows per minute in baseline studies, with variability (Selley 1990; Hoogstraten 1999). If attention-heavy work pushes that down for hours, the end-of-day feeling can be less mystery illness and more “maintenance packets didn’t run”.

A simple model is enough.

  • If swallowing drops
  • and the mouth sits slightly braced (lips pressed, jaw held, tongue parked)
  • and breathing gets quieter or shifts toward more mouth breathing

…then surfaces dry faster and friction goes up. Stress can add another multiplier. Reviews like Bosch (2003) describe how stress can reduce salivary flow and alter composition, which matches the thick “cotton mouth” feeling people report in high-attention moments.

Then the body tries to compensate. If the throat feels “not clean,” you clear it. If the system feels unstable, jaw and neck muscles join as extra stabilizers. None of this needs to be dramatic. Combined, it creates that late-day tight, scraped, effortful vibe.

One loop matters more than the rest. Throat clearing is basically a retry button. It can briefly improve sensation, but it also mechanically irritates sensitive tissue, which can create more sensation, which triggers more clearing. Chronic cough guidance treats this loop seriously (CHEST 2016; ERS 2020). Desk throat is not chronic cough, but it’s useful that a speech pathology intervention reduced cough-related outcomes in an RCT (Vertigan et al. 2006). Boring patterns can be trainable.

Evidence boundary, again. We know attention-heavy screen tasks suppress other maintenance behaviors like blinking, and that’s documented in digital eye strain literature (Patel 1991; Rosenfield 2016; TFOS DEWS II 2017). It’s reasonable to suspect something similar can happen with swallowing during long, still, self-monitored work. Coordination between swallowing, breathing, and speaking is real and studied (Martin-Harris 2005), which fits the everyday observation that people swallow less when trying to speak smoothly or stay camera-neutral.

Where work quietly deletes swallowing

Camera on stillness

On camera, people develop a “ready-to-speak face.” Lips lightly set. Teeth hovering. Tongue parked. Breathing gets quieter because big exhales can look like boredom or buffering. Swallowing becomes weirdly public. You don’t want the loud gulp on a quiet Zoom, so you wait. Then you wait again.

Meeting mechanics make it worse. Swallows cluster in pauses, because swallowing and speaking don’t share the same lane, and respiration timing matters (Martin-Harris 2005). If you are waiting for your turn, you delay swallowing and the bigger reset breaths. In person, micro-movement is less noticeable and turn-taking is messier, so maintenance happens by accident.

By 18:00, you’re not paying for 1 bad call. You’re paying for a whole day of slightly-too-held behavior.

Deep focus blocks and the re-entry tax

The other place swallowing disappears is deep focus. Writing, coding, dense reading, building decks that will be judged by people with opinions. You protect the block. Water and small shifts start to feel like context switching, so they get delayed again and again.

Microbreak research in computer work is pretty consistent that short interruptions reduce discomfort and fatigue complaints (Henning 1997; McLean 2001; van den Heuvel 2003). The mechanism fits the “low-level activation adds up” model from occupational physiology (Sjøgaard 2000; Mathiassen 2006). By 16:00, that “small hold” in your jaw/neck has been running for hours. Swallowing is not always measured, but the broader point is simple. Long, unbroken stillness has a price.

Often there’s 1 extra dryness multiplier that didn’t feel important at the time.

  • Mouth breathing from congestion or allergies
  • Dry indoor air, heating, aggressive AC
  • Drying meds like oral decongestants
  • Alcohol the night before, plus more reflux risk
  • Menthol lozenges that cool sensation without fixing irritation (McKemy 2002; Peier 2002)
  • Caffeine that doesn’t automatically dehydrate (Killer 2014) but can still correlate with dryness for some
  • Poor sleep with mouth leak or snoring

None of this is moral. It’s correlation hunting, like checking what changed before blaming the whole system.

High-evaluation days add another multiplier. Stress can reduce salivary flow and change what that saliva feels like, so you have less margin for the same call load (Kirschbaum 1993; Nater & Rohleder 2009; Bosch 2003). On those days, do the seam swallow-exhale after the highest-stakes calls, not after every call.

Early log files that do not turn into a second job

One reliable cue is what happens right after a call. That’s when the body stops pretending.

  • Throat clearing shows up in bursts, then becomes a loop (RSI makes it trackable) (Belafsky 2002)
  • Lip licking without noticing
  • Repeated small swallows that don’t feel satisfying
  • Tongue feels tight or parked
  • Teeth hovering, jaw braced without clenching
  • Dry or tight sensations that are mild but consistent (VTD uses “dry” and “tight”) (Mathieson 2009)

These are cues, not problems.

Another tell is the end-of-call release. You close the meeting and suddenly want a big swallow, yawn, or long exhale. Slow breathing and longer exhales are supported for downshifting arousal (Lehrer & Eddie 2013; Zaccaro 2018), and the “physiological sigh” has RCT evidence for reducing arousal quickly (Balban 2023). That doesn’t prove it fixes throat mechanics. It’s more like a boundary signal.

A dead-simple proxy is the water glass. If it is 16:30 and the glass is still full, swallowing opportunities were probably rare too. For recurring dryness, the boring xerostomia playbook can help without drama. Small sips, sugar-free gum or lozenges, alcohol-free mouth products. If it persists, look at mouth breathing and drying meds.

If someone wants a tiny bit of structure, keep it small. A 5-day mini-audit with 2 check-ins (around 15:00 and 19:00) can be enough. Log 0–10 for dry and tight and note if throat clearing turned into a loop. The goal is trend spotting, not building a new tracking hobby. The author has a metrics-oriented background (fundamental physics training, and interest in HRV and sleep), so light logging fits when it stays light.

The 12 second patch that fits real calendars

A boundary cue beats a timer

Use seams the day already gives you. Joining a call, leaving a call, hitting Send, stopping screen-share, starting a compile, opening the calendar to see what damage is next. Seam-based cues survive ugly days better than reminders.

Timers are brave in theory, and mysteriously silent in production. (Story of my life.)

This is microbreak logic, just smaller. Short interruptions can reduce accumulated load (Henning 1997; McLean 2001; Sjøgaard 2000; Mathiassen 2006).

The mechanics are intentionally boring

  • Let the teeth be slightly apart
  • Let the tongue go soft instead of parked and braced
  • Do 1 easy swallow, not forced
  • Then do 1 slow exhale, quiet, like finishing a sentence

That’s it. It borrows a little from coordination patterns used clinically (exhale-swallow-exhale) in dysphagia contexts, but this desk version is not dysphagia treatment and not trying to be therapy—and if you have actual swallowing trouble (food sticking, choking), skip this and use the red flags section.

Also: this is just replacing missing micro-inputs, not adding a new ritual to your calendar.

Why it helps in 2 small wins

Win 1 is mechanical. A gentle swallow is movement plus a small lubrication event after statue mode.

Win 2 is nervous-system flavored. Longer exhales and slow breathing patterns are supported for downshifting arousal (Lehrer & Eddie 2013; Zaccaro 2018). Sigh-like patterns can reduce arousal quickly in controlled settings (Balban 2023). That doesn’t prove it changes throat muscle tension in your 15:00 meeting. It’s just a plausible way to reduce the re-clamp.

What success looks like and when to stop

If it works, it won’t feel like instant fireworks. It looks like fewer throat-clear urges later, less dry friction, and a lower chance of paying the full 18:00 invoice.

If it irritates, scale down or stop. Forcing repeated big swallows or doing aggressive throat clearing can keep the irritation loop alive, which is exactly what cough guidance tries to avoid (CHEST 2016; ERS 2020).

Heavy call day version that stays invisible on camera

The worst statue time is often when you are listening. Someone else talks, your camera is on, and your jaw and tongue lock into the ready position.

Keep it low amplitude.

  • Lips rest together
  • Teeth slightly apart behind them
  • Tongue soft
  • Swallow once
  • Exhale slowly through the nose when possible

No head movement. No loud breath. No visible performance. The best version creates zero social friction.

Guardrail, because overloaded schedules are real. If you notice you are monitoring your throat more than you are listening, it has become another task. Drop it.

Guardrails that keep this from getting weird

The main overfix is turning a mild signal into a repetition project. Aggressive throat clearing and forced swallows can irritate already-dry tissue and keep the urge alive. A gentler swap is usually enough. A small sip, or 1 easy swallow, then move on.

Coffee and mints belong in the tools-with-tradeoffs bucket. Menthol can cool sensation while the surface is still annoyed, which can quietly encourage more talking than the tissue wanted. Caffeine is not automatic dehydration, but if symptoms correlate with coffee, that’s useful debugging info (McKemy 2002; Peier 2002; Killer 2014).

Medical guardrails, because this is still a throat. If symptoms are persistent, progressive, painful, or paired with red flags, get evaluated.

  • Trouble swallowing, choking episodes, or food sticking
  • Pain with swallowing
  • Unexplained weight loss
  • Coughing blood
  • New neck mass
  • Severe or escalating reflux symptoms
  • Voice changes lasting more than 2–3 weeks, especially beyond 4 weeks (AAO-HNSF Dysphonia guideline 2018 suggests laryngoscopy for dysphonia >4 weeks or earlier with alarm features)
  • Any pattern that fits urgent referral criteria in suspected cancer pathways (NICE NG12)

For the normal desk-pattern version, treat it like a small config change. Watch the logs, not your personality.

If your throat only starts complaining at 18:00, it’s rarely a mystery bug. It’s more like a day of tiny missing inputs adding up: fewer swallows during camera-on stillness and deep focus blocks, more jaw bracing, quiet mouth breathing, dry air, stress, and the coping stack that feels helpful fast but keeps the loop going.

Most people don’t need a new habit. They need 12 seconds at the seam.

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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:
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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
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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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