How to Get Flat Abs Fast

Transform your middle with this fun stability-ball workout from exercise physiologist and fitness DVD star Amy Dixon, based on her Global Conditioning class at Equinox Fitness in Century City, California. These moves hit every major ab muscle. Perform three sets of each move resting 30 seconds between sets. Do them three times a week (for 20 minutes total), plus 45 minutes of moderate to intense cardio three times per week, and trim 2 belly inches in 4 weeks.