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 ...

"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 ...

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.