Strategies for Implementing a Postpartum Lifestyle Intervention in WIC Clinics

Inclusion Criteria for Clinics: * Serve a large number of WIC postpartum participants * Willing and able to provide space for the study Inclusion Criteria for Participants: * Age 18 or older * Gave birth in the past 6 weeks to 12 months * Obesity or history of gestational diabetes mellitus (Current BMI ≥30 kg/m², OR Medical-record documented history of gestational diabetes mellitus and BMI ≥25 kg/m²) * No self-reported diabetes (other than gestational diabetes) * Hemoglobin A1c \<6.5% * Not currently pregnant or planning to become pregnant in the next 6 months * No plans to move outside of the study region in the next 12 months * Access to a smartphone * Willing and able to participate in the intervention and provide consent * Not an immediate family member of the staff at the WIC clinic * Other concerns regarding ability to meet trial requirements, at the discretion of the principal investigator or study coordinator