Quickie Cardio: 4 New Ways to Do Jumping Jacks

Maybe you haven’t done this move since high school gym class — but jumping jacks are no joke. In this fast workout, CosmoBody expert trainer, Astrid McGuire will show you a twist on the jumping jack that will spike your heart rate,  tone your abs, legs, butt, and arms, and burn mega-fat.  No gym or equipment needed, so get started now!

Get more video workouts at CosmoBody

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