HRV & RHR Insights
Bernhard Hering
Heart Rate Variability (HRV) is the physiological phenomenon of variation in the time interval between heartbeats, measured by the variation in the beat-to-beat interval. HRV reflects your body’s ability to adapt to stress and maintain balance. This app provides an in-depth analysis of HRV SDNN values, as well as key metrics like Resting Heart Rate (RHR), HRV Readiness Score, and Recovery Ratio, recorded by your Apple Watch.