Try This Hardcore Abs Workout to Target Your Core Muscles

Work the obliques, plus abs muscles you never knew you had, with this hardcore abs workout.

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The New Rules of Lifting for Abs: A Myth-Busting Fitness Plan for Men and Women who Want a Strong Core and a Pain- Free Back: Schuler, Lou, Cosgrove, Alwyn: 9781583334607: Books

Try This Hardcore Abs Workout to Target Your Core Muscles