6 Week Six-Pack Abs Workout - Jillian Michaels

Jillian Michaels: 6 Week Six-Pack Abs Workout- Level 1 is a fierce fat-blasting abdominal workout that employs a sure-fire combination of core-focused cardio circuits and ab-toning exercises that target multiple muscle groups simultaneously to boost the metabolism, slim the waistline, and chisel rock-hard abs.