The amount of sleep your teen is getting and the regularity of their sleep schedule is most important, so sleeping until the late morning may actually be okay.
The Importance Of Sleep For Kids: Sleep Services of Maryland LLC: Sleep Medicine
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My teen is sleeping all day, should I be concerned? - Children's National
Get Enough Sleep - MyHealthfinder
Teen Sleeps All Day: Is It Normal? - FamilyEducation
Snoring in Children: Causes & Treatments
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