新研討表現，早睡夙興有助於身材康健，堅持心境愉悅，另有瘦身功能。
通過火析“夜貓子”和“夙興鳥”的DNA，研討發明：夙興的人會比晚睡的人更瘦。
夙興的人罹患煩悶癥和失眠癥的概率也更小。
此項研討讓近9萬人選取本身是“夜貓子”照樣“夙興鳥”，並剖析了他們的DNA。
研討成果註解，人類體內有15個基因與“夙興照樣晚睡”有關。
年紀越大，人起的就越早。以為本身是夙興範例的人中，60歲以上的比30歲如下多出一倍。
《天然通信》期刊中有文章註解，女性比男性更愛夙興。
此項研討的研討職員來自總部處於加利福尼亞州的小我基因檢測公司23andMe，他們也沒法確知生物鐘與康健之間為什麽如斯親密相幹。
但這暗地裏的緣故原由大概很簡略，常常熬夜讓那些夜貓子的身材支付了價值。
舉例來講，該研討註解，與體重有關的一個基因會影響人們的絕佳狀況是在早上照樣夜晚。
研討職員大衛·海因茲說：“咱們愛好把咱們的偏好和行動看成‘咱們是誰’這個題目的焦點。研討心理特質若何影響人夙興或晚睡等行動偏好實在挺風趣的。”
大衛還說：“現現在，可供研討的基因庫數據宏大，咱們可以發明各類病癥暗地裏的遺傳學道理，有望對個別特別性有更深的懂得。”
但“夜貓子”們也沒必要懊喪。以前的一項研討註解，晚睡的人比那些天還沒亮就起床的人更聰慧。
確實地說，依據一項英國研討，最聰慧的人在零點29分時睡覺，而智商最低的那些人在晚上11點41分關燈上床。
人們以為，“夜貓子”和“夙興鳥”這類分類可以從人類進化上找到深層緣故原由。在石器時期，夙興的人帶頭收集食品，晚睡的人則在夜晚守夜。
【參考譯文】
Early to bed and early to rise makes a man healthy, happy and slim, according to new research.
A study that analysed the DNA of self-professed 'nights owls' and 'morning larks' found that people who like to rise early tend to be thinner than those who go to bed later.
They are also less prone to depression and less likely to suffer from insomnia.
Almost 90,000 people were asked if they were naturally a morning or a night person and had their DNA analysed.
This revealed 15 genes that were linked to a person being a 'lark' or an 'owl'.
A preference for mornings rose with age, with more than twice as many of over-60s describing themselves as morning types than under-30s.
Women were more likely to enjoy mornings than men, the journal Nature Communications reports.
The researchers, from the California-based genetic testing company 23andMe aren't sure why a person's body clock might be so strongly linked to health.
But it might to be as simple as too many late nights taking their toll on evening types.
For instance, the study suggested that a gene that is involved in body weight also affects whether someone is at their best in the morning or at night.
Researcher David Hinds said: 'We like to think of our preferences and behaviour as core to who we are and it's interesting to see how our biology influences these things, like whether you are a morning person or a night owl.
'With large genetic databases available for study, we can uncover the genetics behind a variety of conditions and diseases and hopefully reach a better understanding of how we differ from one another.'
But night owls needn't despair because a previous study found them to be brainier than those who leap out of bed when it is still dark.
To be precise, the brainiest go to bed at 29 minutes past midnight - while least clever turn off the bedroom light at 11.41pm, the British study found.
It is thought the division into larks and owls has its roots deep in evolution, with early risers in the Stone Age taking the initiative in food gathering, while late bidders stood guard late into the night.
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