"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." THE BACK extension, that time-tested move for building back strength, has been around the block. But here ...

Which back machines are best? There are many exercise machines designed to work the neck, arms and upper back, but there is one piece of equipment that focuses on your lower core muscles — a back ...

Looking to step up your hamstring training from the simple glute ham raise? Consider trying a Nordic curl. This simple yet intense bodyweight exercise places your knees on the ground rather than ...