Screen time and sleep habits of 85 children aged 11 to 14 for one week using body cameras, cameras in their bedrooms, and sleep monitoring devices. They found that using screens in the two hours before bed was not associated with most measures of sleep health, but the type of screen time and where it occurred were. “It quickly became obvious that adolescents spend a lot of their screen time while in bed Our most interesting findings were that this screen time before they got into bed had little impact on sleep that night. 99 percent used screens in the two hours before bed. More than half used screens once in bed, and a third used them after trying to go to sleep for the night. However, screen time once in bed did impair their sleep—it stopped them from going to sleep for about half an hour, and reduced the amount of sleep they got that night. screen time that took place in bed, interactive screen time—such as gaming—or screen time when the children used multiple screens at once, for instance, watching a film while playing on a gaming device. Every additional 10 minutes of this type of screen time reduced the amount of sleep they got that night by almost the same amount
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