body clock
Biological rhythm regulator
Body clock is the internal mechanism that regulates biological rhythms—sleep cycles, hunger, hormone release, alertness.
It runs on roughly a 24-hour cycle, synchronized to daylight.
Jet lag happens when your body clock conflicts with local time: My body clock is still on Tokyo time.
Also called circadian rhythm in technical contexts.
Daily biological cycle
- rhythmPatterned stress and silence
- melatoninCircadian rhythm regulator
- hypothalamusSubthalamic regulatory brain region
- pinealShaped like cones
gland · chronobiology · entrainment · oscillator · periodicity · endogenous · synchronization · temporal
Time-optimized medical treatment
- sunriseMorning light's arrival
- sunsetDay yielding to darkness
- dawnDay's first glow
- duskDimming after sundown
daylight · darkness · routine · schedule · consistency · reset · adjustment · synchronization
Persistent inability to rest
- drowsinessState of near-sleep
- REMAcronym for dreaming phase
- alertnessActive mental awareness
- wakefulnessState of being conscious
somnolence · nocturnal · diurnal · bedtime · nighttime · dreams · rest · napping
Late-night work schedule
- all-nighterSleepless work stretch
- overtimeWork beyond scheduled hours
- on-callAvailable when summoned
- caffeineMethylxanthine stimulant compound
stimulant · dysregulation · misalignment · desynchronization · fatigue · burnout
Region sharing one hour
- disorientationLoss of spatial awareness
- long-haulCovering great distances
- flightAerial journey by aircraft
- adjustmentAlteration to improve fit
recovery · eastbound · westbound · international · redeye · layover · acclimation · grogginess
circadian
Daily biological cycle
- rhythmPatterned stress and silence
- melatoninCircadian rhythm regulator
- hypothalamusSubthalamic regulatory brain region
pineal · gland · chronobiology · entrainment · oscillator · periodicity · endogenous · synchronization · temporal · regulation
chronotherapy
Time-optimized medical treatment
dusk · daylight · darkness · routine · schedule · consistency · reset · adjustment · synchronization · adaptation
insomnia
Persistent inability to rest
- drowsinessState of near-sleep
- REMAcronym for dreaming phase
- alertnessActive mental awareness
wakefulness · somnolence · nocturnal · diurnal · bedtime · nighttime · dreams · rest · napping · oversleeping
graveyard-shift
Late-night work schedule
- all-nighterSleepless work stretch
- overtimeWork beyond scheduled hours
- on-callAvailable when summoned
caffeine · stimulant · dysregulation · misalignment · desynchronization · fatigue · burnout
time-zone
Region sharing one hour
- disorientationLoss of spatial awareness
- long-haulCovering great distances
- flightAerial journey by aircraft
adjustment · recovery · eastbound · westbound · international · redeye · layover · acclimation · grogginess · resynchronization
- natural cyclescircadian rhythm, sleep cycle, seasons, tides, water cycle
- biorhythmscircadian rhythm, circadian rhythms, sleep cycles, sleep-wake cycle, melatonin
- sleepsleep, sleeping, nap, doze, slumber
- rhythmsbeat, rhythm, syncopation, offbeat, cadence
- animal cycleshibernation, migration patterns, breeding season, mating season, mating seasons
- sleep disruptionsinsomnia, jet lag, sleep apnea, sleep deprivation, sleep debt
body clockalarm clock
Timed sleep-ender
wristwatch · clock · wall clock · mechanical clock · digital clock
body clockwork schedule
Planned job hours
shift work · alarm · daylight saving time · scheduled time · 9-to-5
body, clock, bodily, clockwork, clockwise, biological clock, biological clocks