Final answer:
An average adult goes through 4 to 6 sleep cycles per night, with each cycle lasting around 90 minutes.
Step-by-step explanation:
We generally go through the sleep cycle several times each night. The sleep cycle consists of different stages, including Rapid Eye Movement (REM sleep) and three phases of non-REM sleep, each characterized by distinct brain wave patterns. An average adult goes through 4 to 6 sleep cycles per night, each lasting approximately 90 minutes.
The number of cycles someone goes through can vary depending on various factors, including age and individual sleep patterns. Moreover, aspects like circadian rhythms and homeostatic mechanisms play a key role in regulating sleep, and disruptions to these can lead to sleep disorders.