From the dangers of a late-night cheese binge to that recurring nightmare you have about taking the SATs in your underwear, we’re getting to the bottom of these eight misconceptions about dreams, adapted from an episode of Misconceptions on YouTube. But still, it’s unlikely that scary “cheese dreams” are a real phenomenon to worry about. These REM sleep dreams tend to be more vivid, exciting, and just plain weird. Non-REM sleep dreams, on the other hand, are simpler and less emotional. The researchers studied individuals with REM sleep behavior disorder, which causes people to act out their dreams while they’re sleeping.