偶尔休息不好没什么好担心的，但是长期缺乏深度睡眠会妨碍免疫系统的正常作用。

An occasional restless night is nothing to worry about, but a continuous lack of ZZZ's can hamper your immune system's ability to function.

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如果，另一方面，我们滥用我们的身体，把自己太辛苦，吃不好，不运动，并不能释放紧张，我们的免疫系统减弱，我们更容易生病。

If, on the other hand, we abuse our bodies, push ourselves too hard, eat poorly, don't exercise, and fail to release tension, our immune system weakens, and we are more prone to illness.

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