Your Index™ Sleep Monitor sleep band analyzes your heart rate readings while you are sleeping to determine your heart rate variability (HRV), which is the changing length of time between two heartbeats. Training, physical activity, sleep, nutrition, and healthy habits all impact your heart rate variability. HRV values can vary widely based on gender, age, and fitness level. A balanced HRV status may indicate positive signs of health such as good training and recovery balance, greater cardiovascular fitness, and resilience to stress. An unbalanced or poor status may be a sign of fatigue, greater recovery needs, or increased stress. For best results, you should consistently wear the sleep band while sleeping. The sleep band requires three weeks of consistent sleep data to display your heart rate variability status.

Sync your sleep band with your Garmin Connect™ account to view your current heart rate variability status and trends.