Nearly everyone has days when they feel sleepy. But for some people, excessive sleepiness actually gets in the way of daily work, childcare, and even leisure activities. This is known as hypersomnia, recurrent sleepiness that makes people want to nap repeatedly, even at work.

Not surprisingly, the problem of daytime sleepiness usually starts at night. Even missing just a few nights’ sleep, or not getting enough uninterrupted sleep, can slow you down and sour your mood.

Poor sleep habits are often the cause of daytime sleepiness. Before you go through any more groggy and crabby days, try these 12 ways to improve nighttime sleep and avoid daytime sleepiness.

幾乎每一個人都有在白天感到困乏的時候。但是，對一些人來說，過分的瞌睡妨礙了日常的工作，照顧孩子，甚至連休閑活動的時間都沒有了。這被稱為嗜睡癥，周而復始的困意讓人想不時的打一會盹，即使是在工作的時候。

不足為奇的是，日間困倦的問題通常在夜晚的時候就發生了。即使失去了一些晚上的睡眠，或者沒有得到足夠的不被打斷的睡眠，都會讓您反映慢下來并且心里很沮喪。

不好的睡眠習慣通常是日間奢睡的根源。再你經歷更多的沒有生機和易暴躁的日子之前，試一下下面的十二中方法來改善你的夜晚睡眠質量并避免日間困倦。

來源:可可英語 http://www.ccdyzl.cn/read/201006/105766.shtml