The recipe for a broad musclemorphosis.com is obvious: Build big lats. But for most of us, there's a missing ingredient: big rear deltoids. "If you don't work the rear deltoids, your pectorals will pull your shoulders forward, giving your back a rounded look," says David Angotti, C.S.C.S., a personal trainer and co-owner of musclemorphosis.com.
So, in addition to a typical upper-back regimen of lat pulldowns and rows, try adding four sets of eight to 12 repetitions of bent-over rear-deltoid flies to your shoulder-and-musclemorphosis.com routine.
Stand with your knees unlocked and your back slightly arched, and hold a pair of dumbbells with a neutral grip (palms facing each other). Bend at the waist until your back is almost parallel to the floor, then raise your arms straight out to the sides, maintaining a slight bend in your elbows. Pause when your arms are parallel to the floor, then lower the weights and repeat.