Eleven years of competitive cycling, up to UCI-ranked races. Now weight training, trail running in the mountains, climbs whenever I can, and a curiosity I cannot switch off.
I am not a doctor. I have never claimed to be, and this site is not built on my authority: it is built on published sources that you can check one by one.
Thousands of products, promises copied from one brand to the next, bought reviews, and almost never the information that matters: what dose, in what form, and on the back of which study.
I raced for eleven years with a stopwatch as my only judge. When you train for competition you cannot lie to yourself: either you go faster, or you do not. The clock decides, and it spares you nothing.
That taught me to be suspicious. I tried plenty of methods supposed to make me progress. Most changed nothing on the clock. The few that worked were always the dullest: sleep more, eat enough, train regularly, and keep doing it for a long time.
That is exactly what I find today in the scientific literature on health. What works is rarely spectacular.
GUIVONIZ applies that to the health aisle. We start from the result measured in humans, we check the dose on the label, we write it down when the evidence is missing, and we cite everything. The full method is published here.
My father comes from a family of farmers. Keeping a farm standing is a full-time sport: he has always put his body to the test, and he passed that on to me before teaching me anything else.
My mother has not always been sporty, but she has always been interested. I have always wanted her to take it up properly. I hope she reads these lines, and follows the advice on this site.
Before I was 5, one go on a horse, because my father rode for hunting. I did not like it. One session, and that was settled.
Judo, on the other hand, kept me for three years. Orange-green belt. And one memory I have never forgotten: I had turned up with a shirt under my gi. The moment he saw it, my coach lifted me up by that shirt, a metre off the ground, to explain that you put nothing under a gi. I never did it again.
The youngest categories, one after another. My school friend Maxime rode, so I rode.
At 8, I had to choose. One Wednesday morning I walked into my father’s bedroom to tell him I was quitting judo. The bike had already taken up too much room in my head.
Two seasons of cyclo-cross, a lot of racing, and discovering the time trial. That is where you learn to manage an effort with nobody in front to hang on to.
Two seasons in the under-17s, plus a year learning the track. The track teaches you one thing the road never does: there is nowhere to hide.
Eleven race days, 1,292 kilometres, and events ranked by the Union Cycliste Internationale. The best day: a 7th place on a stage of the Penn Ar Bed - Pays d’Iroise, a UCI 2.1 race, which earned me 14 UCI points and 12th in the young rider classification.
It is all public and checkable: nothing I say here is unverifiable.
See my results on ProCyclingStats →Not because I was tired of the bike. Because the bike was taking up my whole life, and I am too curious to do only that.
I still ride. Road, gravel, the climbs. It has stayed a passion. I just refused to let it be the only one.
And there is another reason, which I cannot explain rationally. For as long as I can remember, two fields light me up from the inside: spirituality (the search for what is beyond us, and for the meaning of our being here) and the subconscious (the part of the mind that works without our noticing, and that decides far more of what we do than we imagine).
The bike left me no room to explore that. So I stopped chasing the clock, and started looking elsewhere.
Three years of weight training, a bit of streetlifting. Trail running in the mountains, swimming when I can, climbing now and then, and a Hyrox-style event.
And this winter, 2026, I am finally going to put on skis. I have never done it in my life. I cannot wait.
I tried boxing two years ago. I did not keep it up, and the reason is not a joke: I was worried about my neurons. I care too much about my memory.
I am not asking anyone to take my word for it. These results are recorded on ProCyclingStats, the reference database for cycling.
11 race days · 1,292 km · 14 UCI points
Check the resultsNor a dietitian, nor a pharmacist, nor a researcher. Nothing on this site is medical advice, and no page replaces a consultation. It is written out in full in the legal notice.
I would rather write that than let you believe otherwise. What I do instead: I rely only on serious institutions and publications — health agencies, meta-analyses, learned societies — and I cite every one of them on the Sources page.
I am not a laboratory. The assessment is documentary: studies, real dose, chemical form, independent certifications. And in any case, how one person felt proves nothing. The method in detail.
Because this site does not rest on my word. It rests on a published method, sources cited one by one, and an index whose calculation you can redo yourself. I am not asking you to believe me: I am showing you where every claim comes from.
And if I am wrong, I probably will not be the only one. All I do is report what the scientific literature says: that is its strength, and it is also its limit. One study can be contradicted by the next, and that is normal — it is exactly how science moves forward. What I guarantee you is not being right every time. It is showing you what I am relying on, so you can judge for yourself, and come back and correct me.
Twenty minutes, every morning. I call it my longevity routine.
This is not a recommendation. It is what I do, and part of it has no scientific evidence behind it at all. I own that and I flag it line by line, because a site that ranks products by level of evidence cannot exempt itself from the same rule when it talks about itself.
I sit outside and look at the sky, wearing as little as possible. Morning light is the best documented lever on the body clock. The long read.
45 seconds to a minute of cold, then the breathing cycles. For me it is the simplest way to meditate: the breath hold stops me thinking. Data on cold exposure exists but stays limited, and the method does not suit everyone: never in water, never alone, and medical advice if you have a heart problem.
Three minutes of core work for the spine, the five movements of the Tibetan routine, stomach vacuums, and a forced exhale into a breathing trainer. Daily movement: that part is not up for debate.
A minute of brain exercise, and above all a mindset of gratitude. The data on brain games is modest; the data on gratitude and wellbeing is more interesting. And it is free.
I listen to sounds at 432 Hz with subliminals, and I prepare my water with raw honey, lemon, ginger and salt, stirred into a vortex. I like the ritual, and it sets me up well.
Rather than deciding for you, here are the sources. Read them, and make up your own mind.
What I conclude: sacred geometry and the memory of water are not supported by the literature. I carry on, because the ritual does me good and it costs nothing. But I am not telling you it is proven.
What I conclude: subliminal priming is a real phenomenon in the laboratory, but self-help audio has been tested and it is expectation that produces the effect, not the content. In other words, it may work — but not for the reason advertised.
What I conclude: a study exists, and that is already more than I expected. But 33 participants, never replicated, and the word “pilot” explicitly means it is there to prepare real research, not to conclude. I file it under very weak evidence.
None of this appears in the site’s comparisons, and it will not while the evidence stays at this level. My personal routine is not an editorial recommendation, and I would rather give you the sources for and against than decide for you.
For as long as I can remember I have needed to understand why we are here. A question that will probably stay unanswered until I die, and that makes me read everything I can get my hands on.
On GUIVONIZ I only publish what stands up in the first column. The rest I keep to myself.
Exclusively by Amazon affiliation. When you buy through one of our links, a commission comes to me; the price you pay is identical.
No other income: no advertising, no sponsored content, no brand partnership, no data sales, since I collect none.
The best independence test for an affiliate site is to look at whether its “best picks” are also its best earners. Here, the first recommendations on several pages earn nothing at all: blacking out the bedroom, fixing your wake-up time, raising fibre through food. And among the products, psyllium at 15 € and vitamin B12 at 14 € — two of the cheapest in the catalogue — are in the top 6.
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