To Sleep, Perchance to Dream: Crash Course Psychology #9

Want more videos about psychology every Monday and Thursday? Check out our sister channel SciShow Psych at ! Why do we sleep? Well... that's a tricky question. More easily answered is the question,“How do we sleep?“ In this episode of Crash Course Psychology, Hank discusses some of the ways our brain functions when sleeping and how it can malfunction as well. -- Table of Contents Four Stages of Sleep 02:38 Why We Dream 04:28 Information Processing 08:13 Physiological