Wall push-ups are a great exercise for working several shoulder muscles at once without putting too much pressure on them.

CHIEF AMONG these are shoulder external rotation movements ... Lie with your chest on a bench set to a 45-degree incline, light dumbbells in your hands, arms hanging naturally.

Grab a heavy dumbbell in one hand and stand with your feet shoulder-width apart ... your lats and putting your shoulders into external rotation. Round your back, then press into the floor to ...

To do that, you'll want to arm yourself with the best tools—which means sorting through the vast array of shoulder exercises ...