Cold Plunge and Heart Rate: What Happens to Your Body During Immersion?
Published: July 16, 2025 Last updated: January 25, 2026 Heart rate is one of the most immediate and noticeable physiological changes during cold plunge therapy. The moment cold water contacts the skin, the cardiovascular system reacts rapidly—often before conscious control of breathing is established. Understanding cold plunge heart rate responses helps clarify what is normal,…