Adolescents need lots of sleep, have odd body clocks
(NEWSER) - Starting high school classes just 30 minutes later leads to marked improvement in students' moods and even their overall health, CNN reports . Teens need 8½ to 9¼ hours of sleep a night, and biological changes associated with adolescence mean they naturally fall asleep later than younger kids. In a small sample—200 high school students—starting school at 8:30 rather than 8am lowered the number of students who described themselves as "unhappy, depressed, annoyed or irritated," says a new study. More»
