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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Victoria Burke, a former therapist Kaley worked with in 2019, testified on Wednesday, and Burke said her social media and her sense of self “were closely related,” adding that what was happening on the platforms could “make or break her mood.”