biological clocks
Bodies' natural rhythms
Biological clocks are internal timing mechanisms that regulate cycles in living organisms—sleeping and waking, hormone release, body temperature.
The circadian rhythm, roughly matching a 24-hour day, is the most familiar.
In popular usage, biological clock often refers specifically to a woman's declining fertility with age: Her biological clock is ticking.
- chronobiologyStudy of living timing patterns
- circadianDaily biological cycle
- rhythmsPatterns of repeated movement
- cyclesRecurring sequences of events
- entrainmentRhythmic systems aligning naturally
sleep-wake cycle · sleep schedule · chronotype · night owl · early bird · morning person · jet lag · time zone · internal clock · hibernation · melatonin · phase shift · periodicity · body clock · reproductive cycles · free-running · wake · menstrual
- biorhythmscircadian rhythm, circadian rhythms, circadian clock, sleep cycles, body clock
biological clockswatches
Portable personal clocks
clocks · atomic clocks · chronometers · wristwatches · timepieces
biology, clocks, biological, biologist, biologists, microbiology, biologic, sociobiology, astrobiology