The Thermalist® Journal

The Thermalist® Journal

Why Most Contrast Therapy Spaces Are Underperforming

Dr. Susanna Søberg's avatar
Dr. Susanna Søberg
Mar 17, 2026
∙ Paid

Over the past few years, I’ve seen a rapid rise in contrast therapy spaces across the world.

Beautiful facilities.
Carefully designed interiors.
Cold plunges, saunas, recovery lounges. They are often built with significant investment and attention to detail.

On the surface, it looks like progress. But underneath, there is a pattern emerging that we need to address. Because many of these spaces, despite their quality, are quietly underperforming.

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The Illusion of Access

The assumption is simple:

If you provide access to cold water and heat, people will use it and benefit from it. But physiology doesn’t work like that. Cold exposure and heat exposure are not passive experiences.
They are stimuli.

And like any physiological stimulus, their effect depends entirely on:

  • How they are applied

Without structure, the same environment that has the potential to improve metabolic health, reduce inflammation, and regulate the nervous system becomes… inconsistent.

Some people feel great. Others feel overwhelmed.
Most don’t know what they’re doing — and stop coming.


Beautiful Spaces, Inconsistent Outcomes

What we often observe across these spaces is a similar pattern:

  • Members move freely between sauna and cold

  • There is no clear direction nor progression

From a user perspective, this creates uncertainty.

From a physiological perspective, it creates noise.

And from a business perspective, it leads to:

  • Low retention

  • Irregular usage

  • Limited measurable outcomes

Which is a problem. Especially when these spaces are built with long-term vision and significant capital.

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Contrast Therapy Is Not the Exposure Itself

This is the key misunderstanding.

Contrast therapy is not:

  • The cold plunge

  • The sauna

  • Or the act of moving between the two

It is the system around it.

The body does not respond to isolated exposures.
It responds to patterns.

Without it, you get an experience. And experiences, while valuable, rarely create lasting physiological change.


The Gap Between Design and Physiology

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