1. Oblique Burners 2. Basic Crunch + Bicycle Twist 3. In In Out Out Plank 4. Side Plank Crunch 5. Bend Extend Ab Tuck 6. V-Ups 7. Swimming 8. Full Body Roll Up DO IT: Perform these 8 core exercises for 30 seconds on / 15 seconds of rest Repeat x 2 - for a 20-Minute Ab Burner Workout