There are many ways to do a plank, from straight-arm, side, and one-legged planks to plank knee taps and jacks. These moves ...

Fact checked by Nick Blackmer Planks are better at building core strength because they engage the deepest layer of your ab muscles.Crunches mainly target the surface abs—the “six-pack” muscles—and are ...

Side planks take the traditional plank and flip it—literally—into a dynamic, lateral challenge that targets your body from a fresh angle. Committing to 20 minutes of side plank exercises each day, ...