一般来说，我们每个人每天需要大约8个小时的睡眠，以维持健康和保持愉悦。
In general, each of us needs about 8 hours of sleep each day to keep us healthy and happy.
然而，为了更好地理解睡眠中的呼吸，首先了解呼吸的一般工作原理是有帮助的。
To better understand breathing during sleep, it is, however, helpful to first understand how respiration works in general.
即使做了这样的研究，也只能证明我们对快速眼动睡眠作用的理解，而不是一般的睡眠。
Even if such studies were done, they could only clarify our understanding of the role of REM sleep, not sleep in general.
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