Why the Whole World Is Suddenly Obsessed With Sauna
From Brooklyn rooftops to Tokyo wellness clubs, sauna culture has gone global. Here is why millions of people are embracing heat bathing — and why you might want to as well.
A decade ago, sauna was something most people associated with a dusty hotel basement or a trip to Finland. Today it is one of the fastest-growing wellness trends on the planet. Sauna clubs are opening in London, New York, Melbourne, and Tokyo. Waiting lists for popular urban sauna sessions run weeks long. On Instagram and TikTok, the hashtag #sauna has accumulated billions of views — and the numbers keep climbing.
So what happened? Why has an ancient Nordic bathing ritual suddenly become a global obsession?
The Pandemic Accelerated Everything
When the world locked down in 2020, people were forced to reconsider their relationship with health, stress, and community. Gyms closed. Social rituals collapsed. And a growing number of people discovered — or rediscovered — the simple, profound power of sitting in a hot room.
The pandemic did not create the sauna trend, but it turbocharged it. People who had been to sauna once in their lives became regular visitors. First-timers started building backyard saunas. Private sauna companies reported record sales. The global sauna heater market, valued at around $600 million in 2020, is projected to exceed $1 billion by 2028.
Science Finally Caught Up With Tradition
For centuries, Finnish and Nordic cultures claimed that sauna was good for you — heart, lungs, skin, mood. Modern science spent most of the twentieth century ignoring these claims. In the last fifteen years, that changed.
A landmark 2018 study published in JAMA Internal Medicine tracked over 1,600 Finnish men for twenty years. Men who used sauna four to seven times per week had a 65% lower risk of Alzheimer's disease and a 66% lower risk of dementia compared to men who used sauna once per week. A separate series of studies from the University of Eastern Finland found that frequent sauna users had significantly lower rates of fatal cardiovascular disease.
The mechanism is now fairly well understood. When your core body temperature rises in a sauna, your heart rate increases to between 100 and 150 beats per minute — similar to moderate aerobic exercise. Blood vessels dilate, circulation improves, and inflammation markers drop. Over time, regular sauna use trains the cardiovascular system much like regular exercise does.
The Social Dimension
Modern life is lonely. Research from Cigna and others consistently shows that loneliness is at epidemic levels in Western countries. Sauna, at its best, is a profoundly social experience.
In Finland, important conversations happen in the sauna. Business deals are struck there. Friendships are deepened. Barriers dissolve in the heat. This social dimension — stripped of phones, status symbols, and distraction — is part of what is drawing urban professionals across the world to communal sauna experiences.
The new generation of urban sauna venues is deliberately designed for this. Places like Thermae Bath Spa in Bath, Aufguss Republic in London, and the many floating saunas of Oslo combine the physical benefits of heat bathing with a genuine sense of community.
The Aufguss Effect
One of the most theatrical and social sauna rituals is the Aufguss — a German tradition in which a sauna master (or Aufguss Meister) pours essential-oil-infused water over hot coals and waves a towel in elaborate choreographed patterns to circulate the steam. Competitions for Aufguss masters now take place across Europe, with audiences watching as masters combine scent, music, and airflow into a performance.
The Aufguss tradition spread from Germany into Austria, the Netherlands, and beyond. It represents something important about why sauna is trending: it combines ritual, community, and physical sensation into an experience that is entirely unlike anything else in modern wellness culture.
A Backlash Against Screen Culture
Many sauna enthusiasts describe the appeal in strikingly similar terms: it is one of the few activities that makes sitting on your phone genuinely impossible. You go into the heat. You leave your devices outside. You breathe. You sweat. You cool down. Repeat.
In an era when attention is the most fought-over resource on earth, an activity that demands your full physical presence — and makes digital distraction physically uncomfortable — has a powerful appeal. Sauna is analogue wellness in a hyper-digital world.
Wellness Tourism Is Fuelling the Trend
The global wellness tourism market was valued at $651 billion in 2022 and is forecast to more than double by 2030. Sauna is increasingly central to this market. Travellers are now booking trips specifically to experience world-class sauna cultures — Finland, Estonia, Norway, and Germany among the most sought-after destinations.
Hotels that once offered a small steam room as a box-ticking amenity are now investing in serious sauna facilities as a core differentiator. New boutique properties in Lapland, the Norwegian fjords, and the Swiss Alps are being built with sauna as the central attraction.
What This Means for You
Whether you are a total beginner or a seasoned sauna user, there has never been a better time to explore what heat bathing can do for your health, your mood, and your social life. The infrastructure is improving — better venues, better trained staff, better understanding of how to use sauna safely and effectively.
Start with one session a week. Find a good communal sauna near you. Leave your phone in the locker. Stay for longer than feels comfortable.
The world is sweating. You should too.
