Cold plunges have gone from monastic discipline to Instagram wellness trend in the span of a few years. The neuroscience behind why it works is genuinely interesting — and more specific than “it’s good for you.” Here’s what cold exposure actually does to your nervous system, and what contemplative traditions understood about deliberate discomfort long before the science caught up.
There’s a nerve running from your brainstem to almost every major organ in your body — and learning how to work with it might be the most practical thing you do for your mental health this year.