Step up to a loaded barbell, keeping the barbell close to your shins, standing with feet shoulder-width apart. Tighten your abs, push your butt back, and bend at the waist, lowering until your arms ...

The barbell row is an excellent exercise for building up your back muscles. More specifically, you'll work your mid- and upper-back muscles, like the lats, rhomboids, traps, and rear delts.