Seated cable row (bar) demo
How to perform a Seated cable row (bar):
Keep your core strong and your spine neutral
Start the movement by retracting your shoulder blades (pinning your shoulder blades back), the muscles in the upper back should be the main focus and not just the pulling of the arms
Pull the weight till your elbows are as far back as they can get so you can achieve a full retraction of your shoulder blades
Keep the muscles under tension the entire time