I did 50 dumbbell shrugs a day for a week — here’s what happened to my shoulders I felt this one in my forearms . Although the main muscle you’re working with the dumbbell shrug is the traps ...

When you shrug your shoulders, that’s your upper trapezius doing most of the work. Your pectoralis major and minor (your “pecs”) connect your chest to your upper arms.

LeBron James recently gave fans insight into the meaning behind his "shoulder shrug" celebration, a move that has become one of his signature gestures on the court. NEWSLETTERS Emailed Daily.