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Cold Plunge

A cold-water immersion setup such as a plunge pool, cold tub, or ice bath used for deliberate cold exposure. The common protocol is a brief immersion in very cold water, often early in the day and done safely, to trigger a strong adrenaline/noradrenaline response and a dopamine boost. People use it for alertness, stress resilience, and sometimes soreness or recovery support, though it may not be ideal immediately after training if maximizing muscle growth is the goal.

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“So if we can have activation of the brown fat just by going out in the cold and just by sleeping in a cold room or if you have courage for it, you can go out and expose yourself in a cold plunge.”

Andrew Huberman · Essentials: Cold & Heat Exposure for Metabolic Health | Dr. Susanna Søberg · Nov 5, 2026 · 17:09 · YouTube ↗
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