At 3 o'clock in the morning, John has already slept for four hours. As long as his sleep continues, we can expect an increasing occurrence of . Group of answer choices REM sleep hypnagogic sensations muscle tension NREM sleep

REM sleep

Explanation:

Based on the scenario being described within the question it can be said that we can expect an increasing occurrence of REM sleep. This acronym stands for Rapid eye movement sleep and is a specific phase in the sleep cycle in which the sleeper's eyes begin to move rapidly due to them being in a vivid dream. Since this usually happens when deeply asleep, after a couple of hours of falling asleep then we can assume that this will occur.

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