9 Fun Facts About Sleep
The Necessity of Sleep: Sleep researcher William Dement once claimed that the national sleep debt is a greater threat to the United States.
Circadian Rhythm: It’s Saturday morning—your one day to sleep in.
The Sleep Cycle: The process of sleep occurs in five distinct stages that repeat about every 90 minutes.
REM Sleep: REM sleep is the stage in which dreams occur. It is characterized by an accelerated heart rate.
REM Rebound: Though the precise function of REM sleep is fiercely debated, the fact that we need REM sleep is not.
The Function of Dreams: The phenomenon of REM rebound suggests that dreams serve a purpose beyond mere entertainment.
Dream Content: Has a friend ever approached you excitedly and announced.
Insomnia: A Common Sleep Disorder: The most commonly reported sleep disorder is insomnia, experienced by approximately 10 to 15 percent of adults.
Hypnic Jerks: Something strange sometimes occurs between sleep stages 1 and 2.
John Tyler (1841-1845): Tyler was the only president to hold office in the Confederacy.