Ditch the barbell and pick up a pair of dumbbells to improve your training.
Seated Dumbbell Biceps Curl
Dumbbells force limbs to work unilaterally. If one side is significantly weaker than the other, there is no running and no hiding. Over-compensation is impossible with dumbbells, making them an effective agent on the war on imbalances.
:
http://www.muscleandfitness.com/workouts/workout-tips/7-advantages-dumbbell-training/slide/2
