Look, I’m gonna be straight with you – those online calculators that tell you exactly how many jumping jacks you need to burn 500 calories? They’re basically making educated guesses about your body.

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,” ...

Look, I used to think those “100 jumping jacks = 10 calories” calculators were gospel. Then I started paying attention to real people doing real workouts, and wow – was I wrong. Those generic formulas ...

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,” ...