Add Yahoo as a preferred source to see more of our stories on Google. When it comes to building core strength, crunches have fallen out of favor and the plank is now considered the gold standard.

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? I'll admit, I sometimes sigh when an instructor cues up a plank. I know, they ...

In the world of fitness trends and high-intensity workouts, sometimes the most effective move is also the simplest. According to FitZip experts, the plank remains one of the most powerful foundational ...

Add Yahoo as a preferred source to see more of our stories on Google. I'll admit, I sometimes sigh when an instructor cues up a plank. I know, they will *always* burn. Planks are a classic core move ...

The fitness world has embraced a new champion in core training, and traditional sit-ups have taken a backseat. The plank, despite its deceivingly simple appearance, has captured worldwide attention ...

Here's how long you should actually be on the floor working your core.

Following changes in military fitness tests, along with corresponding pass/fail standards ,over the past few decades, most military members must master pushups, the plank pose and running.