Andrew Huberman· PhD
There are data showing that submersion in water up to the neck has positive effects even if the water is 60°.
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The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
There are data showing that submersion in water up to the neck has positive effects even if the water is 60°.
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And the interesting thing is despite that fairly modest cold temperature, by simply extending the duration of time that people were in that water, they experienced enormous increases in neurochemicals that ought to translate to improvements in focus and mood.
But the increases in dopamine were massive and lasted hours. So the mood enhancing effects that you report, you're not imagining that. Those are almost certainly a consequence of having slowly elevating but significantly elevated dopamine that goes on for hours.
And most people report feeling a heightened level of calm and focus after getting out of cold water. So cold water exposure turns out to be a very potent stimulus for shifting the entire millu the entire environment of our brain and body and allowing many people to feel much much better for a substantial period of time.