Have you or anyone you know experienced back pain, particularly lower back pain? The answer is almost certainly yes. “Low back pain is one of the most common musculoskeletal complaints,” says Scott Sheehan, a physical therapist at Harvard-affiliated Spaulding Rehabilitation. “Most of the time, it’s a consequence of poor posture, bad ergonomics, or unusual movement patterns.” Less commonly, low back pain can be due to a serious condition such as infection, cancer, or fracture. Regardless of what’