Sit on a flat bench, holding a dumbbell in one hand with your elbow resting on the inside of your thigh. Keep your upper body still and your core engaged—no swinging! Slowly curl the dumbbell toward ...

Concentration curls activate the long and short head of your biceps brachii muscles as well as your: One of the main reasons weightlifters perform concentration curls is because they fully isolate ...

Toning your upper body isn't just about building big biceps. There's another muscle that often goes overlooked: the tricep brachii muscle, aka triceps, for short. Your triceps are located below ...