Sleep Practice Test

Narcolepsy, because sudden REM onset causes jet lag; crossing time zones triggers cataplexy and sleep attacks unrelated to circadian timing.

NREM-3 rebound, because deep sleep immediately increases after travel and prevents daytime sleepiness; the circadian clock remains unchanged by light.

Sleep apnea, because airway obstruction increases with altitude; time-zone travel primarily causes repeated breathing pauses and loud snoring at night.

Circadian rhythm disruption (jet lag), because the internal clock is misaligned with local light-dark cues; entrainment takes time after rapid travel.