Thermal Contrast: Ice, Steam, Stillness

Autonomic training on geothermal ground

The highest-intensity protocol on the calendar: contrast exposure on a steaming geothermal plain, held under continuous physiological supervision.

• Phase 1 · Priming

  Nasal breathing, CO2 tolerance and readiness screening.

• Phase 2 · Contrast

  Three rounds of cold exposure alternated with steam.

• Phase 3 · Return

  Down-regulation and autonomic recovery tracking.

Every stage is optional and every stage is coached. You choose your depth; the protocol keeps its shape.

Dr. Idris Fenn

Thermal & Autonomic · MD

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