Intensive Longitudinal Assessment of Stress and Stress-related Concepts Across a Behavioral Weight Loss Intervention

Inclusion Criteria: * Enrolled in a community-based weight loss program centered in a metropolitan area of a Midwest state. Based on this criteria, we will anticipate participants are greater than 18 years of age, and have obesity. * Must own a smart phone and be willing to download the mobile application to receive text messages Exclusion Criteria: * Report a current medical condition or treatment for a medical condition that could affect body weight. * Current psychological condition (including clinically diagnosed depression) that is untreated, hospitalization for a psychological condition within the past 12 months, or not being on a stable dose of treatment for at least 6 months. * Is not fluent in writing or speaking the English language. * Mobility limitations so they are unable to perform physical activity. * Family member currently enrolled in the study or has a family member that previously participated in the study.