SISU Sauna and Cold Plunge

Spencer Crosland

SISU Sauna & Cold Plunge is a contrast therapy studio built on the belief that consistency builds resilience. Located in Meridian, Idaho, SISU offers a powerful combination of traditional Finnish sauna and cold plunge to help you feel better, recover faster, and build mental and physical strength.

Each session is designed to guide you through hot and cold exposure in a clean, welcoming environment—perfect for both beginners and seasoned contrast therapy users. Our saunas reach up to 200°F, promoting deep sweating, detoxification, and circulation. Cold plunges are kept between 40–50°F, triggering a natural release of dopamine, reducing inflammation, and sharpening focus.

We believe in doing hard things on purpose, and we’ve created a space that encourages just that. Whether you're recovering from workouts, managing stress, boosting immunity, or simply building your personal sisu (a Finnish word for inner strength and grit), our mission is to support your wellness through the science and tradition of heat and cold.

Come solo or bring a friend—community, consistency, and courage are at the heart of everything we do.

Build your SISU. Be consistent. Feel better.

Facility Category:

Health Center

Services Offered:

Contrast Therapy Sessions
Our signature experience: cycle between sauna and cold plunge to maximize physical and mental benefits. The hot/cold contrast improves cardiovascular health, recovery, stress response, and resilience.

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