human sleep cycles
1 statements across 1 episodes · 0 bullish · 0 bearish · 1 people on the record · first statement Feb 22, 2022 by Dr. Matt Walker · across every show →
Everything said about human sleep cycles, oldest first
Feb 22, 2022
Walker: Sleep shifts from deep non-REM early on to REM later
“So that in the first half of the night, the majority of those 90 minute cycles is going to be comprised of mostly deep non-REM sleep, stages three and four. But as we push through to the second half of the night, now that seesaw balance actually shifts over, a…”