Working your back correctly is a crucial part of fitness, good posture, and overall mobility. Adding in both wide and narrow pulling movements helps to isolate your back efficiently. This movement is great to implement at any point in your workout.
Start by standing with your feet about hips distance apart and hinge at the hips keeping your back straight with a micro-bend in your knees(just like you would begin a deadlift/hip hinge). With your back parallel to the floor and your arms straight down under you, pull the weights wide ending next to your chest or when you feel the hardest contraction in your back.