If you're troubled by back pain, you're not alone. This problem affects over 70% of all adults at some time in their lives. The suffering can range from a periodic twinge that makes it difficult to perform everyday tasks to excruciating pain that makes it impossible to get out of bed. Now you can beat the odds and learn how to overcome back problems with the YMCA Healthy Back Book . Developed by the world leader in back care education, this medically...