Cold sharpens. Heat releases. The delta does the work.
Most people recover by feel. They plunge until it hurts, sit in the sauna until they are bored, and call it a protocol. Feel is not a measurement.
We start every membership with a baseline: resting heart rate, overnight variability, sleep debt, and training load. Then we build the cycle around what your data actually says — how cold, how long, how often, and crucially when to stop. You leave with numbers, not a vibe.
See the protocols →Each one sits deliberately on the hot side, the cold side, or across both. Nothing here is a spa treatment — every session has a target, a duration, and an exit condition.
Sixty minutes of measurement before you touch the water. Variability, sleep debt, load, and range.
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Plunge and sauna cycled on a timer. The swing is the stimulus, so the clock is not a suggestion.
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Pneumatic sequencing for legs that feel heavy two days after the session that caused it.
Read more →Guided downregulation for people who train hard and then lie awake at 2am wondering why.
Read more →Members do not usually notice the plunge working. They notice that they stopped waking up at three in the morning. Overnight variability moves before anything else does, which is exactly why we measure it.
“I came in for my knees after a marathon block. Six weeks later the knees are fine, but the thing I actually care about is that I sleep through the night now. They showed me the trend line before I noticed the change myself.”
— Member, 14-month blockSample testimonial. THRESHOLD is a fictional studio built by XALA Studio to demonstrate the work — this quote is written, not collected.
Cold constricts. Heat dilates. Moving between the two, hard and on a schedule, pumps blood through tissue in a way neither temperature manages alone. The cold is not the point and the sauna is not the point. The distance between them is the point — which is where the studio got its name.
The short list of equipment we actually use in the lab. No affiliate racks, no eighty variations of the same strap.
