You go to bed expecting a peaceful night, but wake up feeling shaken, replaying bizarre imagery, unusual scenes, maybe nightmares. Why do dreams sometimes get unusually vivid, strange, or unsettling? And when does it become more than just a “weird night”? Below, we’ll unpack the science behind weird dreams, the various culprits, and concrete ways to calm things down, so you can return to more restful nights. What’s Going On in Your Brain When Dreams Get Weird? To understand why your dreams sometimes feel unusually vivid, strange, or even unsettling, it helps to look at what’s happening in the brain while you sleep. Sleep isn’t one long, steady state. Instead, your body cycles through different stages several times each night. In the early stages of non-REM (NREM) sleep, your body relaxes and brain activity slows down. Stages one and two are considered light sleep, while stage three is known as...
Kevin Spencer
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Oct 22, 2025