Sleep Duration in Women With Previous Gestational Diabetes

Inclusion Criteria: * Premenopausal women, age 18-45, with a history of GDM who currently do not have diabetes * At least one year post-partum * Reported habitual sleep duration \<7h/night during work- or weekdays with a desire to sleep longer * Reported time spent in bed =\<8 hours * Own a smartphone compatible with Fitbit. * No need to provide care at night for her child(ren), defined as \>3 times a week and \>30 minutes at a time * No history of obstructive sleep apnea, insomnia, or restless leg syndrome Exclusion Criteria: * A1C ≥6.5% * Currently pregnant or planning pregnancy or breast feeding * Insomnia symptoms defined as severe as assessed by the Insomnia Severity Index (score ≥15) * Rotating shift or night shift work * High risk for obstructive sleep apnea screened by STOP BANG questionnaire. * Significant medical morbidities, such as congestive heart failure, cirrhosis, chronic obstructive pulmonary disease requiring oxygen, active treatment for cancer or psychiatric problem, history of stroke with neurological deficits, cognitive impairment, kidney failure requiring dialysis, illicit drug use.