The 90-Minute Sleep Cycle: Why Waking at the Right Time Matters

The 90-Minute Sleep Cycle: Why Waking at the Right Time Matters

3:11 Mar 14, 2026
About this episode
Your brain doesn’t sleep in one long stretch — it moves through 90-minute cycles. Wake up at the wrong point in that cycle and you can feel groggy even after a full night of sleep. In this episode we break down sleep cycles, sleep inertia, and a simple way to experiment with timing your sleep so you wake up feeling clearer. 
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