Forget the crowded squat rack—trainers say the back extension machine might be the stealth weapon for building stronger glutes, the powerhouse muscles that drive athletic performance and protect your ...

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? A glute-hamstring developer, commonly known as a GHD machine, is a large, ...