Teenagers who stay up late during the school year are likely to have lower grades and more emotional problems than their morning lark counterparts, according to a study that looked at the long-term sleep habits of teens. read more
“Larks” are up and at it early in the morning, and tend to hit the sack at a respectable evening hour; “owls” are most alert at night, and typically turn in long after dark. advertisement These labels are less an either-or than a spectrum; chronotype can shift over a person’s lifetime, and recent work suggests adding two more subsets to the list: early to wake and late to bed, and late to wake but early bed. read more