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The Guardian - UK
The Guardian - UK
Science
Ian Sample Science editor

Teenagers who go to bed early and sleep longer have sharper brains, study finds

Brain Barbara Sahakian the American Academy of Sleep Medicine
Teenage girl sleeping in bed
According to the American Academy of Sleep Medicine, 13- to 18-year-olds should have eight to 10 hours sleep per night. Photograph: Blend Images/Alamy

Teenagers who go to bed earlier and sleep for longer than their peers tend to have sharper mental skills and score better on cognitive tests, researchers have said.

A study of more than 3,000 adolescents showed that those who turned in earliest, slept the longest, and had the lowest sleeping heart rates outperformed others on reading, vocabulary, problem solving and other mental tests.

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