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.

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 ...

Things high school gym class was good for: gossiping, checking out your wanna-be S.O. in track shorts, and kinda-sorta learning basic exercises. Jumping jacks were one such staple of P.E., and for ...

YOU MIGHT THINK back to your childhood gym class and remember learning the basics of physical fitness, setting a foundation for the grown-up workouts you continue to do today. While you likely keep ...

As you age, your bones generally start to weaken. You tend to lose bone mineral density, an indicator of bone strength, which makes you more prone to fractures in old age. To maintain or even ...

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, ...

Exercise, in general, is one of the best things you can do for your health: It strengthens your heart and lungs, boosts mood and cognition, and lowers your risk of a bunch of diseases, including type ...