Add Yahoo as a preferred source to see more of our stories on Google. How to do the perfect side plank, and how to make it easier (and harder). Planks are hard. Even just 30 seconds in plank position ...

A staple of many core workouts, most runners will be familiar with the side plank exercise. But you may be surprised to learn that it's one of the best exercises you can do for working your deep core.

Add Yahoo as a preferred source to see more of our stories on Google. If you’ve ever tried them, you know side planks are challenging­—even more than regular planks. But they’re a critical move, says ...

Plank workouts are bodyweight exercises that help you strengthen your core and builds stability throughout your body. Besides being simple and uncomplicated, it is also very effective. Akin to other ...