Lack of sleep may make people too tired to be active during the day; sleep deprivation also affects hormones and metabolism in a way that might promote weight gain.

缺乏睡眠会让人在白天因为太累而没有活力，睡眠的缺乏同样也会影响到激素的分泌和身体的代谢而导致体重增加。

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Lack of sleep may make people too tired to be active during the day; sleep deprivation also affects hormones and metabolism in a way that might promote weight gain.

缺乏睡眠会让人在白天因为太累而没有活力，睡眠的缺乏同样也会影响到激素的分泌和身体的代谢而导致体重增加。

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