In the early 1990s, researchers from Brown University (1) and the University of São Paulo (1.5) found initial evidence that circadian biology drives the delayed sleep-wake patterns of adolescents. (1, 1.5) Subsequent studies have confirmed puberty’s onset marks the beginning of a phase shift, with adolescents going to bed later and rising later than younger children. (2, 2.5, 3, 4) Typically…