https://news.livedoor.com/article/detail/20339484/
早起きする人はうつ病のリスクが低く幸福度も高いことが明らかに
Scientists discover one sleep habit is most likely to result in happiness
https://www.inverse.com/mind-body/being-a-morning-person-actually-keeps-you-
happier
Waking just one hour earlier cuts depression risk by double digits, study finds

反了 没忧郁的才能早睡早起 忧郁的都失眠 哭了

难怪小时候都那么快乐，因为我成天都在睡

：<（

是真的 自从不当课长 幸福指数暴涨