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Deep Wave Sleep

Meaning

The most restorative phase of the sleep cycle, formally designated as Stage N3 or Slow-Wave Sleep (SWS), distinguished by the dominance of high-amplitude, low-frequency Delta brain waves on an electroencephalogram (EEG). This period is vital for physiological recovery, immune system consolidation, and the maximum pulsatile secretion of Growth Hormone. Sufficient Deep Wave Sleep is a non-negotiable component of metabolic and hormonal well-being, directly impacting daytime energy and cognitive function.