Heart rate variability measures the variation between heartbeats and reflects autonomic nervous system balance. This topic will explain why higher HRV often indicates better adaptability and resilience. It will discuss how ECG captures beat-to-beat intervals accurately. The article will explore how HRV relates to stress, fitness, and recovery. Readers will understand how ECG-based HRV... https://sunfox.in/blogs/resting-heart-rate/