{"id":7465,"date":"2026-06-03T07:05:31","date_gmt":"2026-06-03T07:05:31","guid":{"rendered":"https:\/\/scienceinhealth.com\/?p=7465"},"modified":"2026-06-03T07:05:53","modified_gmt":"2026-06-03T07:05:53","slug":"vagus-nerve-device-fatigue-review","status":"publish","type":"post","link":"https:\/\/scienceinhealth.com\/fr\/2026\/06\/03\/vagus-nerve-device-fatigue-review\/","title":{"rendered":"J\u2019ai utilis\u00e9 un dispositif du nerf vague pendant 30 jours pour voir si cela pouvait m\u2019aider avec ma fatigue constante... Voici ce qui s\u2019est pass\u00e9"},"content":{"rendered":"
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Je suis un graphiste de 39 ans, et j\u2019ai \u00e9t\u00e9 fatigu\u00e9 pendant trois ans et demi.<\/span><\/p>

Ce n\u2019est pas le \u00ab\u00a0j\u2019ai eu une longue semaine\u00a0\u00bb qui \u00e9tait un peu fatigu\u00e9, mais l\u2019autre genre.\u00a0<\/span><\/p>

R\u00e9veillez-vous apr\u00e8s huit heures et sentez que vous n\u2019avez pas dormi fatigu\u00e9.<\/span><\/p>

Trois caf\u00e9s en retard et toujours en train de plisser les yeux devant l\u2019\u00e9cran, fatigu\u00e9.\u00a0<\/span><\/p>

Terminez la journ\u00e9e de travail sans plus rien pour votre famille fatigu\u00e9e.\u00a0<\/span><\/p>

J\u2019avais essay\u00e9 une alimentation saine, des heures de coucher plus t\u00f4t, des injections de B12, du magn\u00e9sium, de l\u2019ashwagandha, une application pour dormir, du ruban adh\u00e9sif pour la bouche, des alarmes d\u2019aube, des couvertures infrarouges, du vin \u00e0 couper, du sucre \u00e0 couper et deux mois d\u2019entra\u00eenement personnel qui m\u2019ont laiss\u00e9 encore plus an\u00e9anti que quand j\u2019ai commenc\u00e9.<\/span><\/p>

Les choses m\u2019ont aid\u00e9 sur les bords, mais la lourdeur derri\u00e8re mes yeux ne s\u2019est jamais vraiment lev\u00e9e.<\/b><\/p>

Apr\u00e8s un certain temps, tu arr\u00eates de regarder et tu supposes que c\u2019est juste comme \u00e7a que ton corps est maintenant\u00a0: tu construis ta journ\u00e9e autour de trois caf\u00e9s et l\u2019espoir que 20h arrive vite, tu commences \u00e0 d\u00e9cliner les invitations parce que la convalescence n\u2019en vaut pas la peine et tu arr\u00eates d\u2019\u00eatre capable de te souvenir de ce que tu ressens m\u00eame quand tu n\u2019es pas fatigu\u00e9.<\/span><\/p>

Puis une maman du cours de natation de ma fille a mentionn\u00e9 la \u00ab\u00a0stimulation du nerf vague\u00a0\u00bb.<\/span><\/p>

Je n\u2019en avais jamais entendu parler, et honn\u00eatement on aurait dit un de ces trucs bien-\u00eatre sur TikTok...\u00a0<\/span><\/p>

Je n\u2019ai presque pas pris la peine.\u00a0<\/b><\/p>

J\u2019avais \u00e9t\u00e9 br\u00fbl\u00e9 par suffisamment de rem\u00e8des miracles pour reconna\u00eetre ce ton de voix, le \u00ab\u00a0as-tu entendu parler...\u00a0\u00bb et je changeais g\u00e9n\u00e9ralement de sujet. Mais elle avait \u00e9t\u00e9 une zombie brumeuse pendant des ann\u00e9es aussi, et lors de la prise en charge \u00e0 l\u2019\u00e9cole la semaine pr\u00e9c\u00e9dente, elle s\u2019\u00e9tait r\u00e9veill\u00e9e.\u00a0<\/span><\/p>

Alors je lui ai demand\u00e9 \u00e0 ce sujet.\u00a0<\/span><\/p>

Ensuite, j\u2019en ai achet\u00e9 un, principalement \u00e0 cause de la garantie de remboursement de 30 jours. Si rien ne se passait, je le renverrais.<\/span><\/p>

J\u2019ai d\u00e9cid\u00e9 de tenir un journal, jour apr\u00e8s jour, sans filtre.<\/span><\/p>

Voici ce qui s\u2019est r\u00e9ellement pass\u00e9.<\/b><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Jour 1\u20134\u00a0: le matin o\u00f9 je n\u2019ai pas pu me r\u00e9veiller\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Il \u00e9tait livr\u00e9 dans une simple bo\u00eete blanche, je l\u2019ai fix\u00e9 sur mon oreille gauche pendant que le caf\u00e9 se pr\u00e9parait. Un l\u00e9ger picotement, pas d\u00e9sagr\u00e9able, juste l\u00e0.<\/span><\/p>

Pendant trois jours, je n\u2019ai rien ressenti. Je l\u2019ai port\u00e9 \u00e0 travers le chaos du matin, m\u00eame brouillard, m\u00eame caf\u00e9, m\u00eame \u00ab\u00a0J\u2019ai besoin d\u2019une sieste et ce n\u2019est que 9 heures\u00a0\u00bb.<\/span><\/p>

J\u2019ai failli envoyer un e-mail pour le remboursement.<\/span><\/p>

Le quatri\u00e8me jour, je l\u2019ai port\u00e9 pour une session plus longue, environ quarante minutes pendant que je m\u2019asseyais \u00e0 la maison pour travailler sur un logo client, et vers la demi-heure, quelque chose a chang\u00e9.<\/span><\/p>

It wasn’t dramatic, and I didn’t suddenly feel energised.<\/span><\/i>\u00a0<\/span><\/p>

But the heaviness behind my eyes, the one that had been sitting there since 2022, had eased a little. My shoulders weren’t around my ears and I wasn’t already counting the hours until I could lie down.<\/span><\/p>

Not awake exactly, but not dragging either.<\/span><\/p>

C\u2019est \u00e0 ce moment-l\u00e0 que j\u2019ai cess\u00e9 de penser \u00e0 le rendre.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Day 8\u201312: The 3 PM Crash That Didn't Come\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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By the second week, the mornings had started to lift. But the crash was still where I lived.<\/span><\/p>

Every day around 2:45, my brain would just go offline.\u00a0<\/span><\/p>

I’d reach for more coffee, open the fridge and stare, and seriously consider lying down on my office floor and setting an alarm.<\/span><\/p>

Then came day eleven.<\/b>\u00a0<\/span><\/p>

I’d worn the device for half an hour at lunch, got back to my desk, and worked through a client revision. When I looked up at the clock, it was 3:42 PM.<\/span><\/p>

I hadn’t reached for a coffee, hadn’t checked my phone twelve times, hadn’t crashed. I almost didn’t believe it, and I sat there for a minute trying to work out what was different.<\/span><\/p>

It happened again the next day.<\/span><\/p>

And the day after.<\/span><\/p>

I wasn’t energetic – let me be clear about that. I was just not crashing, which after three and a half years of crashing, was the strangest feeling.<\/span><\/p>

Ongoing tiredness like this has been associated with how the autonomic nervous system regulates itself.\u00a0<\/b><\/p>

When the body has trouble switching between its “on” and “off” states, the result can feel like both at once. Wired and exhausted, going through the motions but never quite recovering, looking fine while running on empty.<\/span><\/p>

That last one, looking fine while running on empty, was the one I’d been doing for years.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Day 16\u201322: Sleep That Actually Sleeps\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Sleep had always been the thing I clung to\u2026<\/span><\/p>

I got eight hours, so why was I still feeling that exhausted?<\/span><\/p>

It turns out “eight hours in bed” and “eight hours of sleep that does anything for you” are very different things.<\/span><\/p>

Je portais l\u2019appareil depuis une heure avant de me coucher depuis deux semaines.\u00a0<\/span><\/p>

The first night I noticed something different was on day eighteen: I went to bed at 10:30 and woke up naturally at 6:45, and for the first time in I can’t remember how long, I felt like I’d actually slept.<\/span><\/p>

I checked my Oura ring: deep sleep up, REM up, HRV climbing, resting heart rate dropping.<\/b><\/p>

In the mornings I still wake up tired, the difference is huge.\u00a0<\/span><\/p>

It’s “tired but functional” instead of “tired and broken.”<\/span><\/p>

This was the part I’d given up hoping for.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Jour 23\u201326\u00a0: J\u2019ai fait des recherches dans un terrier de lapin\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Around day 24 I started actually wondering why this was working.<\/span><\/p>

I’m not a scientist, but I’m a designer, so I read the documentation when something works without me understanding it.\u00a0<\/span><\/p>

Voici ce que j\u2019ai reconstitu\u00e9.<\/b><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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The vagus nerve is the body’s main parasympathetic pathway, which is the “rest, digest, recover” system. About 80% of its fibres run from the body up to the brain, meaning it’s mostly informing the brain about what’s happening below the neck, not the other way around.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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When that system gets stuck (through stress, illness, poor sleep, hormonal shifts, or just years of running on empty), the body can have a harder time switching into recovery mode. You’re tired, but you’re not resting.\u00a0<\/span><\/p>

Your sleep doesn’t restore you the way it used to and your weekends don’t sort you out.<\/span><\/p>

HRV, which is the most reliable proxy for vagal function, tracks all of this: lower HRV has been linked with persistent tiredness, poor sleep quality, and slower recovery. It’s why my Oura had been showing me low numbers for years and I’d just rolled my eyes at it.<\/span><\/p>

The technology I was using, called auricular vagus nerve stimulation, has been studied in randomised controlled studies, safety reviews, and analyses. A few numbers from that body of research stood out to me:<\/b><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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