a study that analysed the 1 of self-professed 'nights 3' and 'morning 5' found that people who like to rise early tend to be thinner than those who go to bed later.
通过分析“夜猫子”和“早起鸟”的dna，研究发现：早起的人会比晚睡的人更瘦。
they are also less
6 to depression and less likely to suffer from
7.
almost 90,000 people were asked if they were naturally a morning or a night person and had their dna analysed.
this revealed 15
8 that were linked to a person being a '
4' or an '
2'.
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
9 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
10 on evening types.
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