Personal trainer Jessica Smith, co-author of Thin in 10, shows you a quick workout that will sculpt your abs. Tack these effective moves onto the end of your cardio session: Crunch Chop, Seated Bicycle Twist, Triangle Hip Press, Corkscrew Circles, and Three-Way Plank Position.

RELATED: For a complete core workout, sweat it out with this effective cardio series that will melt away your muffin top.

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