The phenomenally successful JCORE Accelerated Body Transformation is based on patented Rapid Muscle Response® training. In only 20 minutes a day you can get guaranteed results. Your muscles get worked from every angle, burning fat and building lean defined muscle. It trains your body to burn fat—even on your days off. JCORE is a set of 6 DVDs by acclaimed fitness Guru Jay Cardiello. With only four feet of space and no weights or equipment, Jay shows you 30 second Results Blasts that build muscle and blast fat faster than conventional fitness training.