“14 Days to an Amazing, Fit Body” S:1 E:13 22 Min Abs & Cardio Workout

S:1 E:13 22 Min Abs & Cardio Workout With an effective combo of core strengthening moves and cardio, this routine is designed to work not only your abs and obliques, but also the muscles in your arms, back, chest, and even your shoulders. While sit ups certainly strengthen your abs, the body benefits more by torching calories with the use of compound exercises that recruit more than one muscle group.