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Slide 22 of 26

20-Minute Flat-Belly and Toned-Arms Workout

We're going to work your abs and arms with a bunch of multitasking moves that target both areas and more. Grab a set of dumbbells between five and 10 pounds, and get ready to feel the burn. Here's a printable PDF version of the workout so you can take it to the gym.

Credits: On Anna BodyLanguage; On Brittany Puma, Koral, and Athletic Propulsion Labs (APL); On Kaycee BodyLanguage, Lululemon, and Athletic Propulsion Labs (APL); Manduka mats, and Corkcicle bottles