研究人员说，这种明显的健康益处可能来自于“早起鸟”额外的睡眠，因为他们的睡眠时间表能适应社会所期望的早起工作。
The researchers said that this apparent health benefit could come from the extra sleep they would enjoy, as their sleeping schedule would fit with society's expectations of rising early for work.
研究人员说，这种明显的健康益处可能来自于“早起鸟”额外的睡眠，因为他们的睡眠时间表能适应社会所期望的早起工作。
The researchers said that this apparent health benefit could come from the extra sleep they would enjoy, as their sleeping schedule would fit with society's expectations of rising early for work.
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