Build strong and injury-resistant shoulders with this trainer’s three-move dumbbell finisher

Woman in a blue vest and orange bottoms raising a small yellow dumbbell in each hand to shoulder height. shot waist up, facing the camera with part of a blue wall and plant behind her .

All you have to do to grow bigger, stronger shoulders is press weights overhead, right? Well, not quite.

The shoulders—technically the deltoids—are made up of three heads: the anterior or clavicular deltoid, the middle or acromial deltoid and the posterior or spinal deltoid.