Calculateur de Cycles de Sommeil — Formule

Sleep Cycles

One complete sleep cycle lasts approximately 90 minutes. Most adults need 5-6 complete cycles per night.

CyclesDuration 4 cycles6 hours 5 cycles7.5 hours (recommended) 6 cycles9 hours

Waking between cycles (rather than mid-cycle) helps you feel more refreshed.

Exemple Résolu

Waking up at 7:00 AM.

  1. Wake time = 7:00 = 420 minutes
  2. 6 cycles: 420 - 540 = -120 min => (-120 + 1440) / 60 = 22.0 (10:00 PM)
  3. 5 cycles: 420 - 450 = -30 min => (-30 + 1440) / 60 = 23.5 (11:30 PM)
  4. 4 cycles: 420 - 360 = 60 min => 60 / 60 = 1.0 (1:00 AM)