Homonym: HRV (Heart)
Heart Rate Variability (HRV) refers to the variation in time intervals between consecutive heartbeats. It is a measure of the autonomic nervous system's regulation of the heart, reflecting how well the body can adapt to stress and environmental changes. Higher HRV is generally associated with better cardiovascular health and resilience, while lower HRV may indicate stress or potential health issues.
HRV can be influenced by various factors, including exercise, sleep quality, stress levels, and nutrition. It is often measured using devices like heart rate monitors or fitness trackers, providing insights into an individual's overall well-being and fitness levels.