The plank is the most accessible exercise that gives the best outcome for building core strength. It's one of the simplest yet most challenging movements, as it engages many different muscular groups ...

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.

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

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." THERE'S A REASON people often refer to strength training simply as "lifting:" it almost always involves ...

So, What Muscles Do Planks Actually Work? originally appeared on Parade. Planks are one of the most versatile and accessible exercises out there. You don’t need any equipment, and you can do them ...

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 ...