Learn how to increase heart rate variability through aerobic training, slow breathing, HRV biofeedback and recovery—and understand the difference between temporarily raising HRV and improving your long-term baseline.

Learn how to improve heart rate variability with evidence-based strategies for sleep, aerobic fitness, training recovery, slow breathing, stress and alcohol—and why improving your physiology matters more than simply chasing a higher HRV score.

Use our heart rate variability chart by age to understand how HRV changes over time, what RMSSD and SDNN mean, and why your personal baseline and HRV trend matter more than a single reading.