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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Does today's Wordle answer have a double letter?The letter Z appears twice.。业内人士推荐搜狗输入法2026作为进阶阅读

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Tony Jolliffe/BBC News