如果白天有很强的睡意，想小睡一会，虽然有充足的睡眠时间，这也许意味着睡眠障碍需要进一步评估。
If there is excessive daytime sleepiness and desire to nap, in spite of adequate sleep time, this might suggest a sleep disorder warranting further evaluation.
那些睡眠持续时间在正常范围但毫无睡意的病人就会通常抱怨为得了失眠症。
"Patients commonly complain of insomnia when their sleep durations are well within the range of people without sleep symptoms."
如果睡眠受到干扰，你的身体便会自动产生额外的皮质醇，这会增加你在第二天的睡意。
If your sleep is interrupted, your body automatically produces extra cortisol, which will increase your appetite the next day.
但当莎拉把睡眠从她睡意朦胧的眼睛，她看到她妈妈没有注意到。
But when Sarah rubbed the sleep from her sleepy eyes, she saw something her mum hadn't noticed.
限制白天睡眠时间，应避免午睡或打盹，否则会减少晚上的睡意及睡眠时间。
Fifth, limit the time during the day and sleep, nap or a nap should be avoided, otherwise it will reduce sleepiness and sleep at night.
如果依然瞌睡，你甚至可以再增加睡眠时间。不过，如果只是在就寝时间感到睡意的话，你可能已经接近自己的最佳睡眠量了。
If drowsiness continues, you can increase sleep time even more, but if you are feeling sleepy only around bedtime, you are probably close to your optimal sleep time.
如果依然瞌睡，你甚至可以再增加睡眠时间。不过，如果只是在就寝时间感到睡意的话，你可能已经接近自己的最佳睡眠量了。
If drowsiness continues, you can increase sleep time even more, but if you are feeling sleepy only around bedtime, you are probably close to your optimal sleep time.
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