"Adolescents who were night owls, though, were significantly worse at self-regulation than their peers that tended to turn in and wake up early. And teens who were the most tired during the day struggled much more with self-regulation than youth who suffered the least from daytime drowsiness.
“In other words, it’s not how long you sleep that has the biggest impact on self-regulation, but when you sleep in relation to the body’s natural circadian rhythms and how impaired you are by sleepiness,” said lead study author Dr Judith Owens, director of sleep medicine at Boston Children’s Hospital.
For many teens who need to be at school early, these results suggest they’re being set up to struggle with academics and their health."
Read more at http://www.star2.com/family/children/2016/11/07/teens-who-sleep-late-may-find-it-difficult-to-control-their-emotions/#IexfRAod71D5iLLS.99