It turns out the early bird may get more than the worm. According to self-reports from college students, those who wake up earlier feel more optimistic and proactive than those who rise later. Other studies have found morning larks tend to be harder working and conscientious than night owls. (Still, it’s not clear whether waking up early actually makes someone more productive or optimistic.)

事實證明，早起的鳥兒或許真的就能吃到更多的蟲子。根據大學生的自我報告，早起的人比晚起的人要更樂觀積極。其他研究也發現，“早起鳥”比“夜貓子”更努力更自覺。（不過，早起是否真能讓一個人變得更有效率或更加樂觀，依然不甚清楚。）