To fully develop your shoulders, train all three heads with a combination of compound and isolation exercises. Use overhead presses to target multiple muscle groups simultaneously, then incorporate ...

"Take the last 1 to 2 sets and replace them with a rear delt-focused rope," says Ethier. "If you're using a cable machine, ditch the narrow V-bar attachment.

Do rear delt raises with both arms. Maintain the squeeze on one arm, then do a single-arm rear delt raise with the other. Repeat on the other side. Do 4 to 6 pair sof reps like this.