When does the longest REM sleep cycle tend to occur?
A. in the hour or two before waking
B. when first falling asleep
C. halfway through sleep
D. immediately before waking

The longest REM sleep cycle occurs in the hour or two before waking. This phase of sleep, which consists of extended periods of REM, is important for cognitive functions and memory consolidation. As sleep cycles progress through the night, REM durations increase significantly towards morning. ;

Answered by GinnyAnswer | 2025-07-07

The longest REM sleep cycle typically happens in the hour or two before waking up. During this time, REM durations are extended, contributing to important brain processes such as dreaming and memory consolidation. Therefore, the correct choice is option A.
;

Answered by Anonymous | 2025-07-08