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Wellness Journal

Illustrated silhouette of a person submerged in a cold plunge tub with a glowing heart rate variability waveform overlay, representing the measurable effects of cold water immersion on HRV and autonomic nervous system recovery.

Cold Plunge and HRV: What the Data Actually Shows

HRV is one of the most tracked recovery metrics in performance health. Here's what the research actually shows about cold water immersion, autonomic nervous system adaptation, and how to structure ...