@LittleOneK Actually, that's a great question. Heart-rate variability (HRV) is the variation in time between heartbeats. If your heart rate is 60 bpm, your heart doesn’t necessarily beat once per second a healthy heart isn’t like a metronome. Your autonomic nervous system determines the timing of each heartbeat.
HRV varies from person to person. Studies show that people with a higher HRV have better cardiovascular fitness and might be more resilient to stress. Mindfulness, meditation, sleep, and physical activity can help improve your HRV. A significant drop in HRV may indicate that your body is experiencing illness, stress, or depression or anxiety. Several factors can affect HRV, read more about this here.
Hope it helps.
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