YOU PROBABLY THINK you know how to do a plank. The ab training staple is relatively simple, after all—boiled down to the basics, all you need to do is get down on the ground and hold in place.

We received tremendous feedback from participants in The Wall Street Journal Fitness Challenge, a six-week program developed by Arnie Kander, an NBA sports performance coach. Haven’t signed up yet?

Add Yahoo as a preferred source to see more of our stories on Google. It’s normal to struggle to do a plank. Many of my clients need to begin with a modified plank, and if you’re new to fitness, ...

Planks are one of my go-to exercises for building deep core strength and stability. They’re easy to modify for beginners, can be done in different ways as you get stronger, and don’t require any ...

As we're experimenting with more at-home workouts to keep ourselves healthy and happy outside of the studio, I wanted to look into improving one of the simplest total-body (but mostly core) exercises: ...

If there is any exercise that makes you realize the actual length of a minute, it is a plank. It may seem like a simple and easy workout, but it needs a lot of endurance and core strength. If done ...

WORCESTER — Worcester resident Michael Domesick struggled to maintain proper form performing planks, but he was determined to strengthen his core. So Domesick decided to create a plank training ...