Key Findings
This prospective cohort study examined heart rate variability (HRV) recovery dynamics following standardized cold water immersion (10°C for 3 minutes) in 142 healthy adults over 12 weeks of regular cold exposure training.
Participants with faster vagal rebound — defined as return to 80% of baseline RMSSD within 5 minutes post-immersion — showed significantly greater improvements in resting HRV at 12 weeks compared to slow recoverers.
Why This Matters for Body-Mind Practice
Cold exposure is increasingly popular among body-mind practitioners, but individual responses vary dramatically. This study provides the first evidence that how quickly vagal tone recovers predicts long-term autonomic training outcomes.
Original Publication
Autonomic Neuroscience: Basic and Clinical
