Heart Rate Variability
High heart rate variability indicates a robust ability to switch between stress and relaxation, essential for optimal functioning. Practices like deep breathing, meditation, and yoga can enhance this variability, leading to improved cognitive functions akin to those gained from quality sleep. Sleep itself significantly boosts heart rate variability, highlighting the interconnectedness of rest and recovery.In this clip
From this podcast

Ten Percent Happier with Dan Harris
The Science of Sleep | Dr. Sara Mednick
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