David Nazarian, M.D, who is a Diplomate of the American Board of Internal Medicine, said dreams serve a variety of purposes. If you’re curious about sleep patterns and the REM cycle check out The Complete Guide to Your Sleep Cycle.
Dream research indicates that dreams are side effects of our brains working during deep sleep. But most everyone agrees that dreaming is caused by brain activity during rapid eye movement (REM) sleep. Others say dreaming helps us form memories. Some scientists say it is how our brain trains our fight-or-flight reflex. There are a few different psychiatric theories about what causes dreaming. But could that actually be a sign of poor health? One sleep expert claims so, while other researchers are dubious.īelow, we break down what causes dreams and why they’re important, why you might not remember your dreams, and how to start remembering your dreams if you don’t right now. Plenty of people don’t remember their dreams.