Falling asleep in class? Blame biology
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more from News:
http://www.cnn.com/2008/HEALTH/12/12/sleep.teenagers.school/index.html
Sleepy teenagers may not be able to help it, researchers say. Blame it on the early school start time and their circadian rhythms: the mental and physical changes that occur in a day.Teenagers need eight to 10 hours of sleep, compared with the six to eight hours recommended for adults. Teenagers also tend to go to bed and wake later than adults. These biological tendencies clash with early morning high school schedules, leaving them sleepy in class.
Research conducted at the University of Kentucky in Lexington found that when Fayette County high schools delayed their start time by an hour, the percentage of students getting at least eight hours of sleep per night jumped from 35.7 to 50 percent.
The study, published Monday in the Journal of Clinical Sleep Medicine, surveyed 10,000 students in the Kentucky county before and after their schools changed the start time from 7:30 to 8:30 a.m.
Students have the most difficulty staying awake and functioning during early morning classes.
I have trouble staying awake at work sometimes, is there a study for that?!
