Sleep Cycles

Note:

  • Adult needs 120 min REM = around 5 cycles (each 90 minutes)
  • 120 min SWS

Sleep cycles: N1 -> N2 -> N3 -> N2 -> REM

N1

1-5 minutes Light sleep

N2

25 minutes Muscles relax, Slow Wave Sleep begins. Heart rate, breathing and brain waves slow

N3

20 - 40 minutes Deepest sleep Body repairs and regrows tissues, builds muscle, strengthens immune.

REM

10 minutes dreaming, not restful, muscles paralyzed

REM lasts about 10 minutes each cycle

Questions: how does REM compression work? how much SWS does someone need? How can we drop into REM sooner?


related: Polyphasic SleepPolyphasic Sleep

How to Prepare for Polyphasic Sleep
Sleep Cycles
Schedules



Many different patterns have been developed. Important for me is :

E1
core: 23:00 - 5:00
nap1: 14:30 - 14:50

every...