There is strong reason to believe that sleep promotion during adolescence could yield long-term health rewards; the investigators' data show that, when they get more sleep, Morning Larks have impressively reduced intake of overall calories and foods high in glycemic load that are linked to long-term health risk. Before that can be translated into major public health interventions, however, the field needs to understand why similar changes in sleep had no effect, or even an adverse effect, on adolescent Night Owls. This experimental study will clarify why there have been such discrepant effects across Morning Larks and Night Owls, with the goal of more broadly harnessing the promise of improved sleep in the prevention of obesity and long-term morbidity.
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Overall Caloric Intake via 24-hr recall interviews using the United States Department of Agriculture (USDA) Multiple Pass Method
Timeframe: Through Study completion, up to 3 weeks for any given participant.
Glycemic load consumed, as measured via 24-hr recall interviews
Timeframe: Through Study completion, up to 3 weeks for any given participant.