PBS’s, Nova What Are Dreams, is a forty-five-minute documentary about how different stages of sleep effect our dreams. Throughout the documentary, we also witness how dreaming is essential for making sense of the world around us. For nearly a century, many thought when one is asleep the brain is asleep as well. Yet not until technology advanced, did scientists begin examining sleeping patients to notice every ninety minutes their patients brain showed activity as if they were awake but were still unconscious. Rather than normal sleep, scientists decided they were in what is called REM sleep. During REM sleep, also known as rapid eye movement, is when one become sexually aroused, one becomes limp, eyes moved around, heart break and breathing