Inclusion Criteria:  45-80 years of age Have a BMI≥25kg/m2 Endorse pain in the lower back region (i.e., space between the lower posterior margin of the rib cage and the horizontal gluteal fold), knees, or hips Pain must occur on at least 50% of the days in the previous six months Pain must be rated, at minimum, of moderate intensity (rating of 3 on a numeric rating scale ranging from 0-10) Pain impact must be rated as moderate to severe Study physician, Shawn McGargill, MD, reviews medical record and declares patient medically appropriate for exercise protocol  Exclusion Criteria:  Current participation in another psychological treatment or structured weight loss program Severe psychiatric illness not adequately controlled by medication or other conditions anticipated to impair intervention engagement (e.g., substance abuse/dependence) Presence of chronic, malignant pain (e.g., cancer) Significant cognitive impairment (<26) on the Montreal Cognitive Assessment (MoCA) Inability to read and write English Currently undergoing radiation or chemotherapy for cancer Self-reported cardiac event in the past 6 months or self-reported Heart Failure (CHF) Currently pregnant or breastfeeding, or planning to become pregnant during the study time period Back, knee, or hip surgery within the past six months of study entry (or planned surgical interventions for pain during forecasted study participation) If currently taking prescription analgesic or psychotropic medication, must be stabilized on these treatments for >4 weeks prior to the baseline assessment Blood pressure higher than 180/100 mm Hg at baseline assessment Has had bariatric surgery in the past year or is planning to have it in the next year If participant reports the presence of systemic inflammatory disease (e.g., rheumatoid arthritis), the study physician will be consulted to determine eligibility