REM (rapid eye movement) sleep is one of the major stages of the sleep cycle. It is the stage most associated with vivid dreaming, increased brain activity, and emotional processing.
Throughout the night, the body cycles through multiple stages of sleep, including:
REM periods become longer later in the night, which is why consistently cutting sleep short can reduce overall REM sleep time.
When people think about sleep quality, they often focus on how many hours they spend in bed. But what happens during those hours matters just as much—if not more. One of the most critical stages of sleep for both mental and physical health is rapid eye movement (REM) sleep. The quality of your REM sleep can significantly influence your mood, memory, emotional resilience, and overall well-being.
We often think of dreams as random, surreal stories our brains create during sleep — strange mashups of people, places, and events that don’t make much sense. But research suggests dreams can play a powerful role in helping us process emotions, problem-solve, and cope with life’s stressors. In other words, your mind might already be working through challenges while you sleep — and with a little intention, you can harness this process to your advantage.