The Tabletop Row exercise works your back, triceps, abs, obliques and butt.
For this move, you're gonna start with your right leg out and your left arm straight. As you bring your knee in, you're gonna bring your left elbow out. So every time you bend, you bend the elbow and the knee. Every time you straighten, you straighten both the arm and the leg. So you're gonna do all the reps on 1 side and then you're gonna switch sides and repeat.