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In a normal sleeper, a complete cycle of REM and NREM sleep is about 90 minutes long.
Q69: As a general rule, nightmares are indicative
Q102: When a task requires a great deal
Q120: In a study examining the brains of
Q294: In 1971, B. F. Skinner published a
Q307: Rona has a sleep disorder that involves
Q321: Awards, frequent flier points, and college degrees
Q383: What are the potential benefits of meditation?
Q451: Marian Breland was one of the first
Q472: You make a comment in your workgroup
Q651: A parasomnia that involves abnormal sexual behaviors