"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 ...

WHEN IT COMES to training your lower back, it doesn’t get more straightforward than back extensions. This old school classic is a bit more nuanced than you might think, however—and that makes ...

A trainer explains how a single exercise on this overlooked machine can strengthen and protect your back. The Roman hyperextension chair is often overlooked but effective for strengthening the lower ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. It’s easy to almost ...

Your favorite equipment might get you hurt. These are the gym machines you should never use and their safer, more effective alternatives. Let’s be clear: Not all fitness equipment is created equal.