The new research published by Oxford University Press, done in Singapore, found that by delaying the start time, teenagers were able to sleep more and were in a better mood.
During the study, the school start time was delayed by 45 minutes, so instead of starting at 7:30 a.m., students began class at 8:15 a.m.
The American Academy of Pediatrics recommends teenagers get 8.5 to 9.5 hours of sleep a night.
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