HRV stands for Heart Rate Variability, which refers to the ever-changing length of time between consecutive heartbeats. HRV status is a feature available on many newer Garmin watches that contain the Elevate V4 sensor, including the Fenix 7, Epix 2, Forerunner 265, and Forerunner 965. The data used to calculate HRV status is recorded by the heart rate monitor while you sleep, and it is used to calculate physiological measurements such as stress score, lactate threshold, and Body Battery. HRV status is also used to gauge your personal HRV baseline, which represents a normal degree of variability for you personally. This metric is used to enhance insights that youll get from other Garmin features. A low HRV score indicates that your body is less resilient to stress, while a high HRV score indicates that your body is more resilient to stress.