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Why the dreaming phase matters
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Why the dreaming phase matters

by  University of Tsukuba Credit: Bilanol/Shutterstock Scientists have long wondered why almost all animals sleep, despite the disadvantages to survival of being unconscious. Now, researchers led by a team from the University of Tsukuba have found new evidence of brain refreshing that takes place during a specific phase of sleep: rapid eye movement (REM) sleep, which is when...