Inclusion Criteria:  18 years and above Own a smartphone and be willing to install the Signos App to use the app, receive messages or notifications, and input weight and other data. Willingness to complete questionaries or other surveys Able to speak and read English  Exclusion Criteria:  Medical diagnosis of Type 1 Diabetes Medical diagnosis of Type 2 Diabetes Current medical diagnosis of an eating disorder (anorexia or bulimia) or previously struggled with disordered eating behaviors with current BMI less than 24 Medical conditions (e.g., such as seizure disorder) requiring a specific medical diet. Inborn errors of metabolism such as phenylketonuria (PKU), glycogen storage disease, fructose intolerance, Maple Sugar Urine Disease (MSUD). Chronic or severe disease (e.g, chronic obstructive pulmonary disease [COPD], coronary artery disease, cerebrovascular accident [CVA], or cardiac arrhythmia) that would preclude a subject from safely participating in dietary recommendations and/or physical activity History of Gastric bypass or other bariatric surgery History of 10 or more soft tissue skin infections (such as cellulitis or abscesses) Intolerable skin reaction from adhesive Currently taking any of the following medications: Hydroxyurea, insulin, sulfonylureas, or medications prescribed specifically for the treatment of diagnosed diabetes Vulnerable populations such as minors, prisoners, or pregnant women will not be enrolled in this study. Women who become pregnant will be excluded at that time. Inability or unwillingness of subject to give informed consent