Tech wellness, the honest version

The Global Wellness Institute puts the size of the wellness economy at 6.8 trillion dollars in 2024, up 7.9 percent in a year and roughly double what it was in 2013. Some of that is gym memberships and skin cream. A growing share is the thing this room belongs to: places you go to have a physical experience done to your body. Guided sauna and ice bath sessions at Othership in Toronto and New York. Cold plunge tubs in apartments. Sensory rooms, float tanks, red light beds, sound beds. Every one of them arrives with a claim, and the claims are not equally supported.

We build one of these rooms, so we have an interest in the category being taken seriously. The way to earn that is not to promise more. It is to say plainly which parts have evidence, which parts do not, and why the parts without it can still be worth your hour.

What has evidence

Sauna has the strongest observational record. A Finnish study published in JAMA Internal Medicine in 2015 followed 2,315 middle aged men for a median of about twenty years. Those who used a sauna four to seven times a week had markedly lower rates of fatal cardiovascular events and death from any cause than those who went once a week. It is an association, not a trial, and Finnish men who sauna daily differ from those who do not in ways the authors could only partly adjust for. But the gradient was clean and the sample was large.

Cold water has one good randomized trial, and its result is narrower than the marketing. In 2016 Dutch researchers assigned 3,018 people to end their daily shower with 30, 60 or 90 seconds of cold water for a month, or to shower as usual. The cold group reported 29 percent fewer days off sick. They did not report fewer days of actually being ill. Cold water changed how people behaved when unwell, not whether they got unwell, and the length of the cold burst made no difference.

Music has the deepest literature. A 2020 review of 104 randomized trials found small to medium effects on stress, both in the body and in how people said they felt. Felt vibration is younger: a 2022 pilot trial of 54 students found low frequency vibration raised parasympathetic heart rate variability compared with placebo while self reported stress did not separate. Meditation has a real, modest effect on anxiety and depression, and no proof of being better than exercise. We cover each of those in their own pieces.

Notice the pattern. The things with evidence share a shape: a measurable physiological change, usually in the direction of the parasympathetic nervous system, that is smaller than the feeling and does not always match it.

What does not, and why it still matters

Then there is the list without evidence: specific frequencies that heal, crystal or gemstone properties, red light for anything beyond a few narrow dermatology uses, and most of what is written on the wall of a float center. Some of it will get evidence eventually. Most will not. It would be easy to stop there and call the rest placebo, as if that settled it.

The placebo research says it does not. In 2010 Ted Kaptchuk and colleagues at Harvard ran a trial that should not have worked. They gave 80 people with irritable bowel syndrome pills in a bottle clearly labeled placebo, told them the pills were inert, and told them that placebo effects in trials are real. Compared with no treatment, the open-label placebo group reported significantly greater relief, and 59 percent said they had adequate relief against 35 percent in the control group. In 2016 a Portuguese team repeated the design with 97 people with chronic low back pain. Three weeks of honestly labeled placebo pills, on top of usual care, cut their pain by about 1.5 points on a ten point scale, against a fifth of a point for usual care alone.

The lesson is not that anything works if you believe in it. The lesson is that ritual, attention, expectation and the act of taking time for your own body have effects that survive being told the truth about them. A sound bed does not need to invent a frequency to justify the hour. The hour is the intervention. What we owe you is a straight account of which part of the effect is the physics and which part is you.

The hour is the intervention.

How to read a wellness claim

The Federal Trade Commission's guidance on health product claims asks for one thing: competent and reliable scientific evidence, meaning tests done by qualified people using methods the field accepts, before a claim is made. That is a legal standard. Here is a practical one you can apply in a booking page or a shop window. Five questions.

Who was studied? Mice, patients, healthy volunteers, or nobody. Compared with what? No treatment, a placebo, or another active treatment; the last is the hardest bar and the one meditation did not clear. What was measured? A number from a device, or a rating from the person; both matter, and the honest studies report where they disagree. How big was the effect? An effect size, or a percentage change, in the text, not just the word significant. Who paid, and where is it published? A peer reviewed journal you can open, or a summary on the seller's site.

Run our own room through the same five questions and here is what you get. The music research studied patients and healthy volunteers, against no treatment and against placebo, with both devices and questionnaires, at effect sizes in the small to medium range, in peer reviewed journals. The vibration research studied a few dozen students, against placebo, and found the body moved before the mood did. Nobody has run a trial on this bed. So the honest sentence is: music and felt low frequency sound have modest, measured effects on stress, and AVA is a well built way to receive both for an hour.

A claim that answers all five is rare and worth trusting. A claim that answers none is not necessarily false, but you are being asked to take it on the seller's word, and you should price the experience accordingly. Then decide whether the hour is worth it to you on its own terms, because the Kaptchuk trials suggest that the hour, done with care, is often most of the effect anyway.

On AVA, the octagon bed at 29 Nassau Ave plays music through 33 transducers in five body zones, from 41 Hz at the feet to 880 Hz at the head, with generative visuals synced to the same signal. What we can point to is the music and vibration research above: modest, measurable shifts toward rest, seen more clearly in the heartbeat than in the mood. What we will not claim is a frequency that heals. Everything else about the hour, the dark, the lying down, the seven other people, is the part the placebo research says to take seriously, and we do. This is wellness content, not medical advice.