If you spend large amounts of time sitting at a desk or behind the wheel of a car, it is likely that you have weakened your back and developed poor posture. This program, from acclaimed instructor Rodney Yee, is designed to reverse those effects. This series of stretches and postures will arch, stretch, lengthen and twist the core muscles of your back, resulting in the building of greater strength and agility. In addition, the program helps you achieve maximum suppleness of the spine, a sense of inner peace through guided relaxation exercises and the release of stress. Running time: 30 minutes.