four out of five people suffer from back pain at some time in their working lives. In the United States, it is the most expensive health problem in the Back pain cots people up to 360 billion in medical expenses and lost time. means bad or business as well-it is the cause of 40 percent of all lost work days. That some a total of about 93 million sick days year in the United States. Doctors now believe a of back pain. For this reason, char exercise is the best treatment for many kinds Companies exercise too much