From Fitness Attitudes:
Back Exercise Isometrics focuses on working three major muscles: The Lower Back (the erector spinae, the two cords of muscle on the back responsible for good posture and the ones that cause the most low back pain) The Upper and Middle Back (primarily the rhomboids, the muscles between your shoulders and the latissimus dorsi, the wings of muscles under your arms) The Lower Neck and Shoulders. This version is the first release on CNET Download.com.
What's new in this version:
This version is the first release on CNET Download.com.