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  1. 30-Day Ab Challenge: 30 Exercises For A Stronger Core (PDF Calendar)

  2. The Best 30-Day Ab Challenge (Ideal for Men and Women)

  3. 30-Day Ab Challenge: Designed By A CPT | Garage Gym Reviews

  4. 30 Day Crunch Challenge - Diary of a Fit Mommy

  5. Crunch It June: A 30-Day Ab Challenge {monthly workout calendar}

  6. 30-Day Sit-ups, Squats, And Crunches Challenge - Fitneass

  7. 30 Day Ab Challenge {with Calendar and Exercise Printables}

  8. 30 Day Ab Challenge (Free Printable Calendar) - OriginalMOM

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  10. 30 Day Ab Challenge for Beginners - YouTube

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