46:16

In this episode of the Sleep Reimagined podcast, host Vivek interviews sleep scientist Nyë Penn, MHSc., CAA, to explore the science and practical implications of the four sleep stages. Nyë explains the functions of non‑REM stages 1‑3 (light, transitional, and deep restorative sleep) and REM (the "mind‑sleep" stage), describing how each supports physical recovery, immune function, growth hormone release, emotional regulation, memory consolidation, and glymphatic clearance. She discusses the role of adenosine in sleep pressure, how prosomnia sleep therapy uses EEG monitoring to identify REM or non‑REM deficits, and how personalized interventions (cognitive‑behavioral strategies, schedule adjustments, and lifestyle tweaks) can restore balanced sleep architecture. The conversation also tackles common misconceptions (e.g., all sleep is the same, “catch‑up” sleep), the limits of consumer wearables, the value of naps, and practical sleep‑hygiene tips (consistent schedule, cool dark environment, blue‑light management, fluid and alcohol intake). Nyë shares upcoming clinical trials targeting the glymphatic system, linking sleep to Alzheimer’s, PTSD, and overall mental health, and reflects on the surprising spiritual and intuitive aspects of deep REM experiences. The episode ends with a call to action for listeners to explore their own sleep patterns, consider prosomnia therapy, and read Nyë’s book Why We Don't Sleep.

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