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 ...

The world of fitness has crowned a new champion in core training, and it’s not the traditional sit-up. The plank, a deceptively simple exercise, has captured the attention of fitness enthusiasts ...

The plank drag is a plank variation that adds some weight and movement to the exercise, which I find makes it more engaging ...

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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 can feel like an eternity. But as challenging as planks are, side ...