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Sleep Phase Tracking

Meaning

Sleep phase tracking is the systematic monitoring and analysis of the temporal distribution and duration of the different stages of sleep—Wake, Light NREM, Deep NREM (SWS), and REM—across a nocturnal period, typically utilizing wearable technology or polysomnography. This data provides objective insights into the architecture of an individual’s sleep, allowing for the clinical identification of patterns that may compromise hormonal health, such as insufficient Deep Slow-Wave Sleep (SWS) or fragmented REM cycles. Tracking these phases is a crucial component of personalized sleep hygiene and chronotherapy interventions.