RecruitingBehavioural interventionThe Effect of Yoga Practice on Chronic Back PainChronic low back pain is notoriously difficult to treat and is a primary contributor to lost work days and excessive health expenditures, and whose treatment has, in part, contributed to the opioid crisis. Surgery is only an option in a minority of these patients, usually confined to those with structural instability. Yoga is an ancient modality whose benefits are currently being studied.