Back extension machines are a crucial piece of gym equipment ... If you have a push day and a pull day, back extensions are ...

The mechanical simplicity of this pull-string controlled most useless machine is delightful. You can see the metal gripper which is reaching up to tug on a light-fixture-style pull chain.

We get it, your back may not feel as important ... or using a cable machine, and is a horizontal pulling movement. “Pull ups primarily target the latissimus dorsi, but they also hit the biceps ...