Getting up early for school has to be the bane of any teenager's life.
Now, a new study suggests that starting the school day later and letting them sleep in can improve their mood, which in turn could affect academic performance.
Researchers shifted back the starting time of a school in Brazil by one hour and monitored students' sleep, sleepiness and emotional health.
Overall, the adolescents reported feeling less depressed, angry, tense and fatigued at school, the academics found.
The new results stake a claim for delaying the school start time across the UK – something the Department of Education refused to implement three years ago.
