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According to Dr. Andrew Huberman, deliberate cold exposure triggers a significant and sustained release of dopamine and norepinephrine. A cold plunge at 50°F for 1–3 minutes can increase dopamine levels by 250% above baseline, lasting for several hours. He recommends ending showers cold rather than warm to maximize the catecholamine response.
...deliberate cold exposure causes a 250% increase in dopamine that lasts for hours...
...end your shower cold, not warm. The catecholamine response is what gives you that lasting energy...
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Andrew Huberman
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