Establishing healthy sleeping habits is a challenge for many college students. This study determined how academic schedule influenced sleep patterns across the semester, and if these are modulated by place of residence and class start times. 638 freshmen were followed with sleep trackers and a smartphone app over their first semester in university.

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We demonstrated that poorer glucoregulatory status negatively affected the cognitive responses to a low-GI snack intervention. This interaction between glucoregulatory status and treatment response was detectable in non-diabetic subjects with normal to mildly compromised glucose regulation.

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Many people go to bed later than intended, yet very little is known about how bedtime plans are formed and followed. This study aimed to characterize bedtime planning, procrastination, and their relationship with objective sleep behavior among university students.

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 In this cohort study of 96 participants, tracking across 8 weeks showed more regular and better-quality sleep on a float schedule than on a call schedule. A 24-hour overnight call was adversely associated with mood, motivation, sleepiness, and impaired cognition; participants on the float schedule did not have these associations, and naps benefitted vigilance in both schedules.

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