Alcohol can disrupt parts of your sleep cycle, including you me rem cycle. what is the function of rem cycles

Rapid eye movement REM is a unique phase of sleep in mammals and birds. This cycle occurs about 70 to 90 minutes after we fall asleep. REM helps in forming new memories, stimulates the central nervous system, and restores brain chemistry to a normal balance. During REM sleep, our brain and body are energized and dreaming occurs.