Sport a V-shaped torso by adding the underhand-grip barbell row to your routine. It hits your upper-back muscles and straightens your posture all at once. "When pulling the weight to your chest ...

Finally, if you use the underhand grip Samuel suggests, you'll challenge your biceps, brachialis, and forearms too, making the barbell row a low-key asset on arm day as well. If you're thinking ...

Here's this week's exercise: Underhand bent-over row: Any row can give you a great upper-body workout, but this variation is all about the biceps. The reverse grip isolates your biceps ...