Vol. 1 · No. 1 · July 2026
The current issueThe current issue · July 2026
Editors’ selection
The Big Comparison
Traditional saunas have the 20-year health data. Infrared has the plug-in convenience. Which one belongs in your home comes down to three honest questions.
Read 9 min
Feature Review
It's the barrel you've started noticing in backyards and hotel courtyards. We looked hard at what the Nootka 8ft is really made of, what it costs all-in, and where it beats the cheaper kits.
Read 8 min
The Numbers
Most people wildly overestimate what a sauna costs to run. Here's the actual formula, worked through for electric, infrared, and wood-fired — with real numbers.
Read 7 min
The Science
The KIHD cohort followed 2,315 men for two decades. The more often they used the sauna, the lower their risk of dying. Here's what the research does — and doesn't — prove.
Read 11 minThe full table of contents
Buyer's GuideSauna Blankets & Portables
A sauna blanket won't replicate 90°C löyly — but it delivers a genuine sweat for a tenth of the price, and it's the one heat-therapy tool renters can actually own.
Read the articleField NotesOutdoor Saunas
The sauna is the easy part. The pad it sits on, the permit it may need, and the 240V circuit that feeds it are what actually determine your timeline and total cost.
Read the articleBuyer's GuideIndoor Saunas
The best sauna is the one ten steps from your couch. Here's what it takes to put a real hot room inside your house — and why proximity is the whole point.
Read the articleBuyer's GuideHeaters & Stoves
The heater is the engine, and kilowatts-to-volume is the spec most buyers get wrong. Get it right and 90°C is easy; get it wrong and you've built a warm box.
Read the articleThe ScienceCold Plunge
The Scandinavian hot-cold cycle isn't just bravado — winter swimmers show real brown-fat and thermogenic adaptations. Here's the protocol and the gear.
Read the articleField NotesAccessories
The unglamorous gear is what turns a sauna from a purchase into a practice. Four cheap things that decide whether you're still bathing four times a week in February.
Read the articleField NotesAromatherapy
Löyly — steam off the hot stones — is the sensory core of the sauna. Scent is how centuries of tradition tuned it, and ritual is what keeps you coming back.
Read the articleThe ScienceRecovery & Tracking
Post-exercise sauna raised trained runners' endurance 32% in three weeks. A ring or band lets you watch the same adaptation happen in your own resting heart rate.
Read the articleThe Big ComparisonOutdoor Saunas
The barrel's curve is an accident of cooperage that turns out to be superb thermodynamics. The cube answers with headroom, glass, and benches you can actually lie on. The right answer depends on how many people you heat for — and how patient you are.
Read the articleBuyer's GuideOutdoor Saunas
The wood stove asks for forty-five minutes of tending and gives back crackle, smoke-scent, and independence from your electrical panel. The electric heater asks for a 240V circuit and gives back a sauna that's hot when you walk out the back door.
Read the articleField NotesIndoor Saunas
There are more saunas than cars in Finland, and almost none of them are destinations — they're just rooms, used the way we use showers. That ordinariness is exactly what two decades of cohort data ended up rewarding.
Read the articleThe Skeptical ReadInfrared Saunas
Somewhere between the genuinely important (panel coverage, verified EMF numbers) and the purely decorative (mood lighting rebranded as therapy) sits the modern infrared spec sheet. Here's the same page, translated.
Read the articleBuyer's GuideSauna Blankets & Portables
Every portable format is a compromise; the trick is choosing the compromise that matches your floor plan. The blanket disappears under a bed, the tent feels most like a sauna, and the steam kit is the only one that does humidity.
Read the articleField NotesAccessories
No finish to reapply, no chemicals, no drama: sauna care is mostly ventilation, a stiff brush, and honest stone-stacking. Twenty minutes a season buys decades.
Read the articleThe ScienceCold Plunge
The plunge isn't good or bad — it's timed. The same three minutes of cold that sharpens a morning can, placed right after lifting, quietly argue with the adaptation you trained for.
Read the articleThe Science
Sit in a sauna and your cells think something's gone wrong — in a useful way. They deploy a repair crew called heat-shock proteins, and that stress-then-recover loop is the leading explanation for why heat behaves a little like exercise.
Read the articleBuying Logistics
A sauna can be an HSA/FSA purchase — but only with a Letter of Medical Necessity and paperwork done in the right order. Here's the process, honestly.
Read the articleBuying Logistics
Nobody tells you a sauna arrives as 1,500 lbs of pallets at the curb. Here's the delivery day, the assembly weekend, and the inspection ritual that saves claims.
Read the articlePricing, DecodedInfrared Saunas
Sunlighten's full-spectrum mPulse line doesn't publish a price — you request a quote. Here's the honest street-price ladder for all four sizes, and the upgrades that swing it by thousands.
Read the articleFeature ReviewHeaters & Stoves
The Cilindro is the see-through stone column you keep noticing in nice saunas. We looked at why the shape matters, who the 8 kW version fits, and what it needs from your wall before it'll run.
Read the articleField NotesRecovery & Tracking
A traditional sauna runs hotter than any wrist tracker is rated for. Here's what actually happens to a WHOOP, Apple Watch, or Oura ring in the heat — to the hardware, and to the readings.
Read the articleWhy the sauna
Sauna bathing is one of the few wellness habits with two decades of prospective cohort data behind it. The Finnish KIHD study followed 2,315 middle-aged men for over 20 years and found that the more often they sat in the heat, the lower their rates of fatal heart disease, stroke, hypertension, and dementia — with a clear dose-response by frequency and session length. Mechanistic work points to heat-shock proteins, plasma-volume expansion, and vascular adaptation much like exercise. It's association, not proof of causation, but the signal is unusually consistent.
Men using a sauna 4–7 times a week had a 50% lower rate of fatal cardiovascular disease and 40% lower all-cause mortality than once-a-week bathers over ~21 years. · JAMA Internal Medicine, 2015
The same frequency band was associated with 66% lower dementia risk, 61% lower stroke risk, and 46% lower incident hypertension in follow-up analyses. · Age and Ageing, 2017
A 2018 review in Mayo Clinic Proceedings concluded sauna bathing is linked to reduced cardiovascular and all-cause mortality and is well tolerated by most people, including many with stable heart disease. · Mayo Clinic Proceedings, 2018
Heat exposure triggers heat-shock proteins and plasma-volume expansion — adaptations that overlap with moderate exercise, which is why researchers call sauna 'exercise mimetic' with caveats. · Experimental Gerontology, 2021
General information, not medical advice. The cohort evidence is observational — strong, consistent association rather than proof of causation — and anyone with a serious heart condition or pregnancy should seek medical clearance before regular heat exposure.