To avoid puffy, bloodshot eyes, dark under-eye circles and a pale washed-out complexion — and for peak alertness and energy — experts say you need eight hours of sleep a night.

专家们说，人每天的正常睡眠应达到8小时，这样才能保证头脑清醒，精力充沛，避免出现眼睛浮肿、充血，黑眼圈，和面色苍白等现象。

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To avoid puffy, bloodshot eyes, dark under-eye circles and a pale washed-out complexion — and for peak alertness and energy — experts say you need eight hours of sleep a night.

专家们说，人每天的正常睡眠应达到8小时，这样才能保证头脑清醒，精力充沛，避免出现眼睛浮肿、充血，黑眼圈，和面色苍白等现象。

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