Training shoulders usually means combining a multijoint overhead pressing movement with various raises that target the front, middle, and rear deltoid heads individually. That's a straightforward and surefire way to make those muscles grow. Except, of course, when you do it wrong.
We've identified 10 of the most common mistakes and training errors made on shoulder day, and will present each one to you with a pair of photos—one correct and one incorrect. Your job is to pick out the correct way to do each exercise (which we hope is the way you do it). You'll get a score at the end with an explanation of how each exercise should be completed!