白領須知：“晚上不睡，早上不起”也是病
對於朝九晚五的上班族來說，早睡早起大概是保持旺盛精力的法寶之一。不過，我們身邊總有一些晚上不睡，早上不起的朋友，讓他們早起無異於讓他們受刑。原來以爲他們也就是犯懶而已呢，殊不知這也是病症啊！
Delayed Sleep-Phase Syndrome (DSPS) is a circadian rhythm sleep disorder in which the individual's internal body clock is delayed with respect to the typical sleep at night, rise in the morning pattern of most adults. Such people are sometimes called "night owls", though for those with DSPS, their hours are not by choice.
睡眠相位延遲綜合症(Delayed Sleep-Phase Syndrome，簡寫爲DSPS)是一種生物週期性睡眠紊亂症，指一些人體內的生物鐘比通常意義上的“晚上睡覺，早上起牀”這種模式有所延遲。這些人一般被稱爲“夜貓子”，不過對這些患有睡眠相位延遲綜合症的人來說，這樣的作息時間並不是他們自己選擇的。
People with DSPS generally fall asleep late at night, often in the pre-dawn hours, and wake in the late morning or in the afternoon. Furthermore, there is a striking inability to fall asleep at an earlier, more typical bedtime. As a result, many people with DSPS have been labelled as insomniacs. But if such a person is allowed to follow his internal sleep pattern, he generally has no problems with either falling asleep or waking naturally.
患有此症的人通常很晚睡覺，多數要熬到凌晨纔會入睡，然後快到中午或者下午才醒來。他們完全沒有辦法早一點，或是在更正常的時間點上牀睡覺。因此，他們很多人都被歸爲失眠症患者。但是，如果讓他們按照自己的生物鐘安排作息的話，入睡和起牀其實是沒有問題的。
However, if he ignores his internal clock and attempts to live on a normal schedule, DSPS can cause difficulty thinking clearly, driving safely, and generally functioning well. Over time, this may significantly reduce a person's productivity and enjoyment of life, and can lead to clinical depression or other stress-related medical problems.
假如這些人忽視自己生物鐘的模式，非要按照常規的時間表作息，就會導致思路不清晰、駕駛不專心等一系列功能性紊亂現象。長此以往，他們的工作效率和生活滿意度會顯著降低，並有可能導致抑鬱或其他壓力型健康問題。
