The Side Plank Pull-Down exercise works your shoulders, triceps, back and abs.
This exercise works the muscles in your back, as well as the muscles in your core specifically your obliques. In this position, be sure your shoulders and your hips are stacked. Imagine you're sitting between two panes of glass. Then feel your back, lift up away from the floor, so you feel a lot of activation in the back. As you press down, you wanna maintain the height of your hips, pushing, using those muscles right underneath your shoulder blades.