The biological cycle that regulates our pattern of sleep is called

A) circadian rhythm.
B) myoclonic event.
C) non-REM sequence.
D) dormant rhythm.

Circadian Rhythm

The internal biological clock that regulates the sleep-wake cycle and repeats roughly every 24 hours.

Biological Cycle

A natural, recurring physiological or behavior change in living organisms that is influenced by environmental factors or internal mechanisms.

Sleep Pattern

The natural or habitual timing, quality, and quantity of sleep in an individual or across populations.