Students have sometimes found that after a good night's sleep they are able to remember material they studied the night before. Is this true?
If you've ever been up all night, you may have found that staying awake becomes a lot easier after five or six a.m. Why?
Chances are you've heard a description of what's called a near death, out-of-body experience. For a lot of people, it's a powerful, even mystical experience.
For people with REM sleep behavior disorder, or RBD, the action in the dream is acted out in reality!
Have you ever heard that older people need less sleep?
Did you know that sleep walking has nothing to do with neurological problems or disorders? Learn more on this Moment of Science.
Sleep is divided into distinct cycles that contain four different types, or stages, of sleep. You experience stage one when you doze off at the office in the late afternoon, but you’re still aware that you’re sitting in front of your computer.