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 ...

"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 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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Forget the crowded squat rack—trainers say the back extension machine might be the stealth weapon for building stronger glutes, ...

Several exercise machines may exacerbate lower back pain if a person does not use proper form, or if they have pre-existing back conditions. A person can discuss alternatives with a physical therapist ...