What does the sleep cycle tend to contain as it recurs through the night

A)  more stage 4 and less REM 
B)  more stage 4 and more REM 
C)  less stage 4 and less REM 
D)  less stage 4 and more REM

Sleep Cycle

The progression through various stages of non-REM and REM sleep that occurs throughout a typical night, playing crucial roles in rest and recovery.

Stage 4

In the context of sleep, this refers to the deepest stage of NREM (non-rapid eye movement) sleep, characterized by the presence of delta waves and considered crucial for restorative sleep.

REM

Rapid Eye Movement, a sleep phase characterized by fast and random movements of the eyes, associated with vivid dreaming and increased brain activity.