REM Sleep Helps You Process Negative Thoughts and Memories

When we think negatively about events and situations in our lives, these negative thoughts and memories are accumulated and stored by our brains. I like to think of these negative thoughts and memories as being stored in a stress bucket. This stress bucket fills up with our daily negative experiences and thoughts which contribute to stress; these things can be small things like being late for work or not being able to find a parking space, or large things like losing your job or a relationship breakdown. They all add up and our head can get rather crowded by these unwanted thoughts and memories!

If you are a fan of Harry Potter, you might recall the ‘pensieve’ that Dumbledore uses. When he has too many thoughts and memories in his head, he siphons the excess thoughts into the basin using his wand. He says that “it becomes easier to spot patterns and links” in the memories when they’re collected in the “pensieve”. In reality, REM sleep, or Rapid Eye Movement, is our equivalent of this “pensieve”.

At night, we enter into REM sleep; the stage of sleep where we dream. During this stage of sleep, we re-run the events of our day and anything that might be in our stress buckets, either in clearly exactly as it happened or metaphorically. These thoughts are then moved from the primitive part of the brain, where they are an emotional memory, to the intellectual part of the brain where they become a narrative memory. What this means is that the emotion has been stripped from the memory and you have a better control over it – you can think about it when you want to rather than it randomly popping up in your head when you don’t want it to. You can still recall that is wasn’t a pleasant experience but it no longer triggers the same emotional response as it once did and you are able to rationalize what happened.

I am sure that you are already familiar with how REM works, even without realizing. Let’s say someone says something to you at work that upsets you. You go to bed that night and during your REM sleep your brain enters in to the process of emptying your stress bucket, changing those memories from emotional to narrative. So when you awaken in the morning, you may well have forgotten about what the person said, or you might not but you will definitely have more perspective on the event and be able to see the bigger picture, like with the “pensieve”.

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