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How much does your phone’s blue light really delay your sleep? Relax, it’s just 2.7 minutes

  • Written by Chelsea Reynolds, Casual Academic/Clinical Educator and Clinical Psychologist, College of Education, Psychology and Social Work, Flinders University
How much does your phone’s blue light really delay your sleep? Relax, it’s just 2.7 minutesMangostar/Shutterstock

It’s one of the most pervasive messages about technology and sleep. We’re told bright, blue light from screens prevents us falling asleep easily. We’re told to avoid scrolling on our phones before bedtime or while in bed. We’re sold glasses to help filter out blue light. We put our phones on...

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