Dessa är ordets examples relaterade till sleep-cycle. Klicka på valfritt ord för att gå till dess ords detaljsida. Eller, gå till definitionen av sleep-cycle.
Pilots reset their sleep cycles by drinking coffee and watching videos.
Melatonin, a hormone secreted by the brain, is closely associated with the body's sleep cycle.
The brain gets time to rest during the deepest part of our sleep cycle, known as non-REM (rapid eye movement) sleep.