Understanding Heart Rate Variability
Heart Rate Variability, or HRV, is a new way to track your health.
Heart rate variability is literally the variance in time between the beats of your heart. So, if your heart rate is 60 beats per minute, it’s not actually beating once every second. Within that minute there maybe 0.9 seconds between two beats, for example, and 1.15 seconds between two others. The greater this variabil…