Evidence-based wellness, mapped across the US.
Sauna, cold plunge, breathwork and recovery studios listed in cities across the US, and honest, evidence-based guides to every practice. Curated multi-day retreats are coming.
Find wellness in your city
All cities →2657 sauna, cold plunge, breathwork and recovery venues listed across 34 US cities, from our own research, with addresses and official sites. Also see the 2026 statistics.
How Tendground works
An evidence-led way to find wellness near you. We map what exists city by city, then add curated picks and bookable retreats carefully, only pointing you to what we would point a friend to.
Every venue, city by city
Sauna, cold plunge, breathwork and recovery studios across 34 US cities, with addresses and official sites. We compile from public listings, so you can confirm the details before you go.
The honest, evidence-based read
What each practice actually does, what the research supports, and what it doesn't. No detox claims, no cure claims, no hype. The guide we wish existed when we started.
Only what we'd send a friend to
As we curate retreats and providers, listing stays free and we never sell placement. We earn a commission only on bookings we actually send a provider.
Wellness writing without the noise.
Most wellness content is either a paid placement or a round-up nobody researched. We map what exists and write the honest version, what the evidence supports and what it doesn't.
No sponsored placements. No pay-to-rank. If it isn't useful, we don't publish it.
Read less. Choose better.
From the journal
All posts →Field notes on saunas, cold plunge, retreats, and the practices behind them.
Does a SAD lamp work? What the trials show, how long to use one and who should check first
For winter depression, yes. Bright white light, about 10,000 lux for 30 minutes first thing in the morning, beat placebo in randomized trials, and it should help within 3 to 4 weeks if it is going to. Some medicines, eye conditions and bipolar disorder call for a doctor first.
Read post →Can you sweat it out? Alcohol, THC, nicotine, caffeine, a cold, a fever and toxins
Mostly no. About 1% of the alcohol you drink leaves through the skin, sweat carries only traces of THC and nicotine, and the liver, kidneys and gut do the clearing. A sauna will not end a hangover, a cold or a fever.
Read post →Do spa gift cards expire? The federal five-year rule, fees, and the promo-card catch
Under federal rules, the money on a spa or massage gift card cannot expire sooner than five years after it was bought or last loaded, and an inactivity fee needs a full year of non-use. Promotional bonus cards and paper-only certificates are excluded.
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