Guides and evidence
Sauna and cold plunge guides
These pages answer the questions people ask at the front desk before they ask the internet. A few of them are about our room in Cotswold specifically. Most of it applies wherever you sauna.
How to run a session
Session length, water temperature, order of operations, and frequency — the set people actually search for. Most of these carry linked primary sources, and where the research runs out we mark the spot rather than round up.
Sauna
How Long Should You Stay in a Sauna?
Fifteen to twenty minutes per round, one to three rounds — and the structure matters more than the number. What the Finnish data actually shows, what it doesn't, and why bad ventilation is the reason your gym sauna makes you feel awful.
Sauna + plunge
Sauna or Cold Plunge First? The Order That Actually Works
Sauna first, then the plunge, then rest — and repeat. The reasoning behind the order, how many rounds, the end-hot-or-end-cold argument, and an honest accounting of how thin the evidence actually is.
Cold plunge
Cold Plunge Temperature and Time: The Actual Numbers
The honest numbers on cold plunge temperature and duration — 50–59°F, one to three minutes — plus what the famous "11 minutes a week" figure actually rests on, and the exact point where the research stops.
Cold plunge
Best Time of Day to Cold Plunge
Whenever you'll do it. Two studies have compared times of day for cold water immersion. One measured shivering, one measured hormones, and neither found a difference that matters. The morning and evening arguments are built out of studies that never looked at the clock.
Sauna
Sauna Before or After a Workout?
After, for almost every goal — and here's the narrow case for before. Plus the honest version of the cold-plunge-blunts-hypertrophy evidence, which cuts against us.
Sauna
How Often Should You Use the Sauna?
The research-backed answer to the most-asked question — and how to find your own rhythm.
Benefits, and what's oversold
Sauna has more long-term data behind it than most things sold as wellness. A few of the popular claims still don't survive contact with the studies, and these pages sort out which is which.
Sauna
Sauna Benefits
Cardiovascular conditioning, stress reduction, sleep, recovery, mood, brain health. What's claimed, what's supported, what to expect from regular practice.
Cold plunge
Cold Plunge Benefits
What cold immersion actually does — and what it doesn't. Recovery, alertness, mood, and the question of dose.
Sauna
Does a Sauna Burn Calories? An Honest Answer
Barely — and the scale drop is sweat, not fat. Where the viral "300-400 calories" number actually came from, why nobody ever measured it, and what the research does support.
Sauna
Is a Sauna Good for Your Skin?
Mostly no. A 2018 Mayo Clinic Proceedings review found no robust evidence that sauna treats or prevents skin disease, with one hedged exception for psoriasis scale. The flush is real and temporary. The detox and pore stories aren't real at all, and heat makes some skin worse.
How the versions differ
Most of the sauna research studied one specific thing: a hot, humid Finnish room. Infrared cabins and hotel-gym closets are a different product, and heat and cold do different jobs, so it helps to know which one you're reading about.
Sauna
Traditional Sauna vs. Infrared Sauna
What's actually different about a traditional Finnish sauna and the infrared boxes most chains run. Heat type, humidity, session feel, and what the research actually says.
Sauna
Finnish Sauna vs. American Sauna
How Finnish bathing culture differs from the Americanized version most people grew up with — temperature, humidity, etiquette, rhythm.
Sauna + plunge
Sauna vs. Cold Plunge: Which Do You Need?
Pick one, alternate them, or do both. How to choose for your goal — recovery, sleep, energy, focus.
Before your first visit
The practical part: what to bring and how the rotation actually works when you walk in. Also the house etiquette, which is shorter and less precious than you'd expect.
In the studio
Your First Sauna Visit — What to Expect
Everything a first-timer needs: what to wear, what to bring, how long to stay in, when to plunge, when to rest.
In the studio
The Sauna Culture — Visitor Handbook
Our house etiquette: walk-in policy, session timing, sauna and cold plunge usage, payment, memberships.
In the studio
Can You Bring Your Phone in a Sauna?
No, and the reason is engineering before it's etiquette. Apple rates its hardware to 95F. This room runs 180 to 200. What Apple, Oura, Garmin and Samsung actually publish, and the experiment nobody has ever run.
When to skip it
Two days people ask us about most, and the answer both times is that the research is thinner than the internet suggests. Heat is not a cure for being unwell, and it is not a cure for last night.
Sauna
Can You Use a Sauna When You're Sick?
Not with a fever, and not with anything in your chest — that one's for a doctor. Somebody did run the trial: 157 people with fresh colds, breathing 90°C sauna air through a mask. Read the methods before you cite the result. They wore winter coats and stayed three minutes.
Sauna
Does a Sauna Help a Hangover? No, and Nobody Ever Tested It
No. Not because a sauna was tested against a hangover and failed, but because nobody ever ran the trial. Sweat carries a tenth of one percent of the alcohol you drink. The one sauna-and-alcohol experiment we can find measured systolic blood pressure falling twenty-three points.
Still have a question?
If it isn’t answered here, ask us at the desk. We’re at 274 S Sharon Amity Rd Unit 1 in Cotswold, open seven days a week, and nobody minds explaining the rotation again.