What We Have Built — The Thermalist® Method as a Global System
Dr. Susanna Søberg, PhD · soeberginstitute.com
I want to share something with you that I do not often put in one place — the full picture of what the Thermalist® Method has become, and where it is going.
Not because I want to impress you with numbers. But because I think you deserve to understand what you are part of when you follow this work — and what is being built for the future.
Where it started
The Thermalist® Method began as a research question. What does structured thermal exposure — the deliberate alternation of cold and heat — actually do to the human body? And can we be specific enough about the answer to turn it into a teachable, repeatable, measurable practice?
The peer-reviewed answer — the Søberg Principle, published in Cell Reports Medicine in 2021 — confirmed that yes, we could. Structure determines outcome. The sequence matters. The physiology is specific.
From that foundation, the method has grown into something I could not have fully imagined when I was collecting data in Copenhagen.
What exists today
Four online courses at the Søberg Institute — covering everything from a first introduction to the method through to a full 12-week personal metabolic protocol. Thousands of students across more than 127 countries. A 5-star rated course catalogue built entirely on the published science.
A global newsletter — 25,000 subscribers across 127 countries, reaching the United States, United Kingdom, Australia, Canada, Denmark, and beyond. A community of people who have chosen to follow the science rather than the trend.
More than 250 certified Thermalist® instructors in more than 25 countries — practitioners who have been trained directly in the method and are delivering it in wellness facilities, health clinics, fitness studios, and spa environments worldwide.
And now — the Thermalist® Recovery System. The next evolution of the method. A complete contrast therapy operating system for premium wellness facilities, spa hotels, and hospitality operators — incorporating structured programming, staff certification, guided sound experiences, and a member-facing technology ecosystem. Built on the same published science. Designed for real commercial environments.
Why I am telling you this
Because I want you to understand something important about what the Thermalist® Method is — and what it is not.
It is not a wellness brand that commissioned research to support its marketing. The research came first. The Søberg Principle is published. The science is real. Everything built on top of it is a translation of that science into the real world.
That matters — not just for credibility, but for what it means about the future. A method built on genuine science does not expire when the trend moves on. It deepens as the research develops. It strengthens as more practitioners apply it and more data is gathered.
The Thermalist® Method is fifteen years of research in the making. It will be here in fifteen more.
What is coming
The Thermalist® Recovery System is now launching to selected founding partners in premium wellness and hospitality. The app ecosystem that supports it is in development. The science behind it continues to develop.
And the Søberg Institute will continue to publish — new research, new courses, new tools — for the individuals and practitioners who want to go deeper.
You are part of that community. And I am grateful for it.
If you are a wellness operator or know one who should be part of the Thermalist® Recovery System founding partner programme — the application is open at thermalist.com.
→ Thermalist® Recovery System — thermalist.com
→ All courses — soeberginstitute.com
Thank you for reading. Thank you for supporting this work. 🌊
— Dr. Susanna Søberg
