Certified Polysomnographic Technician (CPSGT) Practice Exam

A typical person experiences about 4 to 6 sleep cycles during a full night of sleep. Each sleep cycle generally lasts around 90 to 110 minutes and consists of various stages, including both non-REM and REM sleep. Over the course of a typical 7 to 8 hours of sleep, this results in multiple cycles as the body transitions through different stages.

This range of 4 to 6 cycles is well-supported by sleep research, indicating a normal pattern for healthy adults. Factors such as individual variations in sleep needs, age, and lifestyle may influence this number slightly, but 4 to 6 is the common range cited in sleep studies.