Study of Yoga vs. Health Education for Chronic Pain in Persons Receiving Opioid Agonist Therapy

The Specific Aims of this treatment development research are: To conduct a pilot randomized clinical trial (n = 40) of hatha yoga vs. a health education group (attention control) for persons with chronic pain who are taking methadone maintenance therapy (MMT) or bupreonorphine (BUP) for opioid use disorder maintenance treatment. Participants will be enrolled in the active intervention for 3 months, and then be followed for 6 months afterwards. Investigators' aims are: 1. To assess feasibility and acceptability of both the yoga class and the health education control group. Investigators will assess credibility of the assigned intervention and expectancy for improvement for both groups at baseline, program satisfaction following program participation, participant adherence (class attendance rate and amount of home practice corresponding to assigned study arm), and instructor fidelity to the manuals. Investigators will conduct structured interviews following program participation to understand specific aspects of both programs considered attractive, useful, or not useful; we will solicit suggestions for improvements as well. 2. To assess safety, investigators will track all adverse events in a structured fashion. Investigators do not expect to see any serious adverse events definitely or probably related to study participation. 3. To assess feasibility of research procedures, investigators have benchmarks for recruitment rate, retention for study assessments, and reliability of instructor fidelity measures.