Start school later, sleep longer, learn better: New study shows that flexible school start times can be an effective and practical approach to reducing chronic sleep deprivation and improving adolescents’ mental health and academic performance.

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Hard difficulty hints, answers for Feb. 27 PipsNumber (6): Everything in this space must add up to 6. The answer is 4-0, placed horizontally; 2-6, placed vertically.，详情可参考heLLoword翻译官方下载

NHS England recorded more than 80,000 gallbladder surgeries in 2024-25

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