Replying to @celest_cheyanne26 Here you go, boo! Whike the back extension machine primarily* targets the erector spinae muscles, which run along the spine, you CAN target different muscle groups by adjusting your form. The back extension machine (or hyper extension machine) can be used for back, glutes, hamstrings, and even core! while adjustmenting your form can shift the emphasis of the exercise to different muscle groups, the erector spinae muscles will still be worked to some extent regardle