Sleep: sleep is a state of consciousness
-we are less aware of our surroundings
Conscious
Subconscious
Unconscious: state of sleepiness, altered state
Biological rhythms
Annual cycle: seasonal variations (beats hibernation, seasonal affective disorder)
28 day cycles: menstrual cycle
24 hour cycle: our circadian rhythm
90 minute cycle: sleep cycles
Circadian rhythm:
-24 hour biological clock
-our body temperature and awareness changes throughout the day
-it is best to take a test or study during your circadian peaks
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