一半的志愿者被剥夺了睡眠，而其他志愿者则保持正常睡眠。
Half of the volunteers were then deprived of sleep while the other half received a normal night's sleep.
只要有5到6个小时的睡眠，他们能比正常睡眠者更加精力充沛。
With just five or six hours' sleep, they're more energized than regular sleepers.
今天，正式实施多相睡眠，所以昨晚是我正常睡眠的最后一个晚上。
I'm starting this polyphasic sleep schedule today, so last night was my last night of "normal" sleep for a while.
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