Fire & Ice
How ice plunges, sauna sessions and the sweat lodge at The Thyme keep us healthy.
Written by Michael Brotherton
If you’ve joined us at The Thyme, you likely remember the rhythm: warmth, breath, cold, stillness. The sauna’s enveloping heat. The sharp clarity of the plunge. The quiet intensity of the sweat lodge. These experiences are not simply beautiful rituals. They are intentional.
Immersion in cold water activates the sympathetic nervous system, the same system that governs our stress response.
Photo: Kiernan Rome
Modern physiology gives us a useful lens. Heat and cold are forms of controlled stress (hormesis) small, temporary challenges that ask the body to adapt. In response, the cardiovascular system works harder, blood vessels expand and contract, stress hormones rise and then settle. When practiced thoughtfully, this cycle can strengthen the body’s ability to return to balance.
Preparation for The Thyme’s Fire & Ice ceremony during Resonance, January 2026. Photo by Kiernan Rome.
One of the clearest data points comes from a long-term Finnish study that followed over 2,000 men for more than 20 years. Those who used a sauna 4–7 times per week had about a 50% lower risk of fatal cardiovascular disease compared to those who used it just once per week. While this doesn’t prove cause and effect, it suggests something powerful: repeated, moderate heat exposure may meaningfully support cardiovascular health over time.
Those who used a sauna 4–7 times per week had about a 50% lower risk of fatal cardiovascular disease compared to those who used it just once per week
Photo: One of The Thyme’s two saunas, shot by Kiernan Rome
Cold exposure plays a different but complementary role. Immersion in cold water activates the sympathetic nervous system, the same system that governs our stress response. Heart rate increases, breathing sharpens. And then, if you stay steady, something shifts. The parasympathetic system re-engages. Many guests describe feeling calm, focused, and emotionally reset afterward. It’s a kind of nervous system training where you learn not just how to activate, but how to recover.
The Thyme’s Sweat Lodge alongside Sage’s Ravine. Shot by Kiernan Rome.
At The Thyme, in the quiet landscape of the Berkshire Mountains, we integrate these modalities not as extremes, but as invitations. The sauna is not about endurance. The plunge is not about proving toughness. The sweat lodge is not about pushing through discomfort. Each is an opportunity to notice your breath, your limits, your resilience.
Heat expands. Cold clarifies. Community grounds.
In a world that often keeps us in a low-grade, chronic stress state, alternating between intensity and intentional recovery can be profoundly regulating. The science supports the physiology. The ceremony supports the meaning. And together, they create the kind of embodied reset that many guests say they carry home long after they leave.
Your body already knows how to adapt. We simply create the space to practice.
