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Deep Rest Index

Meaning

The Deep Rest Index is a sophisticated, composite metric used in physiological monitoring and advanced sleep science to quantify the overall quality and the profound restorative capacity of an individual’s rest period, extending its assessment far beyond simple sleep duration. This index often meticulously integrates several crucial data points, including the precise duration of slow-wave sleep (deep sleep), the measured complexity of heart rate variability (HRV), and the depth of the core body temperature nadir achieved during the night. A consistently higher index score is a reliable reflection of more effective physiological repair, robust immune consolidation, and optimal hormonal regulation.