Strengthen more than just your core muscles with the humble-yet-mighty plank.

If you are looking for a real challenge, then try doing the RKC Plank. Invented by a former Soviet special forces trainer, ...

Add Yahoo as a preferred source to see more of our stories on Google. Ah, the plank. It may just be one of the most intimidating exercises. Anyone who has shook their way through one knows that the ...

Why one trainer calls the plank variation "no joke." ...

While practicing Pilates is an effective way to strengthen your core, you can build core stability, balance, and strength ...

Here's how long you should be able to hold a plank — according to your age - Planking is a great strength-building exercise with a variety of health benefits ...

Forearm plank extensions work both your core and your glutes for a challenging exercise that you can throw into any strength training routine Nike trainer, Reiki practitioner, and meditation ...

Pilates pro Simone de la Rue demonstrates how to do a plank jack—aka the ultimate cardio and core-strengthening move—with proper form. A little known fact about planks: In addition to working nearly ...

Plank jacks are a dynamic exercise that combines the core-strengthening benefits of planks with the cardiovascular boost of ...

Slider planks involve positioning your hands and feet on discs, sliding them outwards, holding the pose for a few seconds, ...

Margot Robbie, pictured here on the set of the "Barbie" movie wearing a pink and white gingham dress, trained with David Higgins to get into top character shape. (Photo: Everett Collection) This ...

Burpees are a popular exercise, but they can put a lot of stress on your joints. You can swap burpees for other lower-impact ...