Understanding Heart Rate Variability: What It Is and Why It Matters
If your smartwatch or fitness app has started showing you a number called "heart rate variability," you're not alone in wondering what it actually means. Millions of wearable devices now track this metric daily, yet most people have no idea whether their number is good, bad, or worth mentioning at their next appointment. A Cardiologist doctor in Bowie patients turn to for answers can help translate that data into something meaningful, because heart rate variability says a lot more about your health than a simple resting heart rate ever could. What Is Heart Rate Variability? Heart rate variability, often shortened to HRV, measures the tiny differences in time between each heartbeat. Even when your heart appears to beat at a steady 60 beats per minute, the actual gap between beats is constantly shifting by fractions of a second. A heart that shows more variation between beats is generally considered healthier and more adaptable, while a heart that beats with rigid, machine...