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Infrared sauna, cold plunge tub, and red light panel in a dark recovery room

THE RESEARCH BRIEF

The research behind heat, cold, and light.

Each protocol, examined session by session against the published studies behind it. What the research shows, what it does not, and how to read the difference.

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The Research Brief

A dark barrel sauna interior with low LED lighting and a stone heater

Heat, Cold, and Light Together: How the Full Protocol Works

A dark barrel sauna interior with low LED lighting and a stone heater
Protocol

Heat, Cold, and Light Together: How the Full Protocol Works

Most research studies one input at a time. This covers sequencing: what order to add heat, cold, and light in, and how to time them within a day and a week.

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A stone-filled sauna heater and wooden bucket in a dark sauna
Sauna

Traditional Sauna: The Format the Research Was Actually Done In

The Finnish cohort studies people cite were done in traditional saunas. What a traditional sauna is, how those studies were built, and how to read an observational study.

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A dense array of red-glowing lamps against a dark background
Red Light Therapy

Red Light Therapy: Wavelengths, Timelines, and What the Research Measures

What the wavelengths on the box mean, how irradiance and dose work, why more is not better, and how long the studies actually run before they measure anything.

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A stone cold plunge basin with icy water and snow on the rim
Cold Plunge

Cold Plunge: Temperature, Duration, and What Is Actually Happening

Chiller vs ice, the 50 to 59F range, the cold shock response and how it fades, what the recovery research shows, and the safety checks that are not optional.

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Dark sauna interior with dappled light across the benches
Sauna

Infrared Sauna: What the Research Actually Supports, Session by Session

What infrared sauna sessions involve, what the long-term studies looked at, and what they do not show. Most sauna research was done in traditional saunas, and this explains why that matters.

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