Low back pain affects 80% of people at some point in their lives. In the United States it is the most common cause of job-related disability, and a leading contributor to missed work. 90% of low back pain is due to muscular or other soft tissue strain or sprain, and is not caused by any serious musculoskeletal or neurological disorder. Therefore, becoming more effective in helping those who are suffering from this ailment can lead to your success as a massage practitioner. And, learning to ease your own back discomfort can prolong your career.