"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." A glute-hamstring developer, commonly known as a GHD machine, is a large, specialized piece of equipment ...

My glutes are still on fire.

Rowing machine muscles worked include the quads, glutes, triceps, and more, making it a great whole-body workout. This heart-pumping, high-intensity exercise activates many of the muscles that are ...

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 ...