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NOVA: Mysteries of Sleep Like virtually every other animal, humans need sleep to survive. But why? What do we gain from spending nearly a third of our lives in such a defenseless state? And what's at stake if we sleep poorly? The functions of sleep have long been something of a mystery. But now scientists are peering deep into the brain to see what happens while we snooze. One ...。被喊了三年瞎子，入赘苏家后，叶子风就不知道自己的老婆长啥样。如今功法大成睁开双眼，老婆贼美，入赘的那些苦真没白挨，尤其是知道自己还能透视之后……...。