Add Yahoo as a preferred source to see more of our stories on Google. Person doing jumping jacks workout Look, I’m gonna be straight with you – those online calculators that tell you exactly how many ...

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Denise Austin, 67, shared a “low-impact,” “#FitOver50” workout video. In the video, Austin demonstrates a jumping jack alternative. The “half jack” is an effective move that is “easy on your body,” ...

Real talk: The thought of doing jumping jacks may be only slightly more enticing than burpees. It may bring back memories of pre-dodgeball warm-ups back when dodgeball was part of gym class. Yet, ...