Heart rate variability (HRV) reflects the variations in time between consecutive heartbeats. But why do you care? Higher HRV is generally associated with better cardiovascular health and overall well-being. Normal HRV ranges can vary, but in general: - **Adults (18-25 years):** 55-105 ms - **Adults (26-35 years):** 50-100 ms - **Adults (36-45 years):** 45-95 ms - **Adults (46-55 years):** 40-90 ms - **Adults (56-65 years):** 35-80 ms - **Seniors (66 years):** 30-75 ms Monitoring HRV can be done