I teach cold immersion for a living, so believe me when I say: most of what you have heard about it is theatre. The shirtless influencers, the ice-bath machismo, the claims of immunity to disease — this noise has buried a genuinely remarkable and genuinely modest set of facts, and the facts deserve better.
Here is what three minutes in 6°C water reliably does: noradrenaline rises around 250 percent and stays elevated for hours, which you experience as sharpened focus and durably improved mood. Dopamine rises comparably, without the crash that follows most things that raise dopamine. That's the core of it. It is enough.
The real skill is the exhale
The gasp reflex on entering cold water is an alarm — an honest one. The entire practice lives in what you do next. If you can lengthen your exhale within the first fifteen seconds, the alarm quiets, and you discover the state that keeps people coming back: total alertness laid over total calm. They are supposed to be opposites. In cold water, for a few minutes, they are not.
This is why I teach cold as a breath practice that happens to be wet. The water is just the most honest teacher available: it does not care about your intentions, only your exhale.
Doses, not feats
Eleven minutes per week, split across three or four sessions, captures essentially all of the measured benefit. More is not better; more is showing off, and showing off in cold water has real risks. At SOMA every immersion is supervised, timed and preceded by breath preparation — the least dramatic and most important sentence in this essay.
Jonas Keller · SOMA Retreats
March 2026
