Lower back pain is a serious issue in the United States. It's estimated that approximately 31 million Americans experience backaches at any given time and 50% of workers admit to having significant back pain symptoms every year. There are many causes of low back pain, but the most common causes of backache include poor posture, improper lifting technique, obesity, sedentary lifestyle, and mild trauma from athletic activities. For low back pain, there are a variety of effective treatment options, although using an exercise ball at home is probably the most economically friendly. An exercise ball (also called stability ball or core ball) is a great tool to address lower back pain, weakness and inflexibility.