Inclusion Criteria:  Classified as overweight or obese with BMI 25.0-39.9 kg/m2. Documentation* of a prediabetes diagnosis within one year of enrollment by physician or primary care provider based on lab tests showing a fasted blood glucose of 100-125 mg/dL, a 2-hour oral glucose tolerance test of 140-199 mg/dL, or an HbA1c level of 5.7%-6.4%76; OR a study screening lab value of HbA1C within the afore mentioned range. Currently engaged in <100 min/week of physical activity - confirmed by questionnaire. No exercise contraindications as assessed by the Physical Activity Readiness Questionnaire (PAR-Q)78-this Questionnaire involves seven "yes" or "no" questions regarding an individual's health status, with answering "yes" to any one of these questions requiring a prospective participant to acquire a written doctor's note stating they can safely participate in the trial's exercise intervention. No self-reported physical/mental disabilities or gastrointestinal conditions. No antibiotic usage within the last 45 days. Stable weight over the last 6 months (<10% change). Not currently pregnant, planning to become pregnant, or currently breastfeeding.  Willing to maintain current dietary and exercise habits, aside from any changes to be made per the study exercise protocol.  Note: Documentation can include either a print out or screen shot of the lab value illustrating eligibility, along with the date of the test and the participant's name. If a hard copy is provided, the date and name will be redacted.  Exclusion Criteria:  Self-reported use of metformin and/or other medications that could interfere with the primary outcome. History of bariatric surgery or a history of other medical interventions that would interfere with the primary outcome.