New Episode Dropped 🚨🚨🚨 #shorts
19 Jul 2026 · 1 min

0:34
In this short video, Nyree Penn explains that sleep occurs in alternating waves of non-REM and REM stages throughout the night. She highlights that REM sleep tends to be concentrated later in the night, typically between 2:00 AM and 4:00 AM, and that within an 8‑hour sleep period, about 2 hours of REM sleep is considered the necessary amount for quality rest.










