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The British navy attacked the Chesapeake because
Circadian
Relating to biological processes that display an endogenous, entrainable oscillation of about 24 hours.
Microsleep
A brief episode of sleep which may last for a second or two to a half-minute, occurring when someone is apparently awake and often goes unnoticed by the person experiencing it.
Threshold
The minimum level of stimulus intensity required for a sensation to be perceived or a response to be elicited.
Sleep Cycles
The progression through various stages of non-REM and REM sleep that repeats cyclically throughout a typical night's rest.
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