Describe the sleep-wake cycle, including key factors such as REM and NREM stages, brain wave patterns, and the typical characteristics or behaviors for each stage.

The sleep-wake cycle, including key factors such as REM and NREM stages, brain wave patterns, and the typical characteristics or behaviors for each stage is explained below in detailed explanation.

Explanation:

(REM) rapid-eye-movement sleep and non-rapid eye movement (NREM) sleep are a couple of types of sleep. NREM sleep is classified into steps 1, 2, 3, and 4, describing a continuum of comparable extent. Each has different features including modifications in brain wave patterns, eye movements, and muscle condition.