Jillian Michaels: 6 Week Six-Pack Workout- Level 1 is a high intensity 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 t
Kick Butt Kickbox (cardio kickboxing, fat burning cardio, abs) - You Tube video. Join Jessica Smith for this killer cardio and conditioning workout. No equipment required. Moderate to high impact, intermediate level.