"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 ...

When it comes to resistance gym machines, the back extension is underrated. Just ask strength and conditioning coach Andy Vincent. When I hit him up for which machine he believes is most effective for ...

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? With countless ways to mix it up, this type of training is an efficient way to ...

Add Yahoo as a preferred source to see more of our stories on Google. And when it comes to choosing one, quality matters. We rolled up our sleeves and got to testing and researching the best back ...