8 Weeks to 200 Consecutive Sit-Ups : Build a Strong Core by Working Your Abs, Obliques, and Lower Back at Home Workouts No Gym Required by Cody Smith (2021, Trade Paperback)
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The 200 consecutive sit-up program is here to take your fitness to the next level if you're willing to accept the challenge. the program to be tough but manageable. transforming your core. Want to hear a secret?.