Bakalar, N. (2018, September 26). Are We Over-Planning Students’ Learning Experiences? Retrieved January 17, 2019

Youths who had one hour or longer daily physical activity, nine to 11 hours of nightly sleep and two hours or shorter recreational screen time had nearly 4% higher scores on cognitive tests, compared with those who didn’t meet any of the behavioral recommendations, but only 5% adhered to all criteria, compared with 30% who adhered to none, according to a study in The Lancet Child & Adolescent Health. Researchers also found 5.1% higher test scores among those who followed sleep and screen time requirements, compared with those who didn’t.

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