Performing the: A Step-by-Step Tutorial Barbell Curl
While keeping your upper arms stationary, exhale and curl the weights while contracting your biceps; continue to raise the weights until your biceps are fully contracted and the barbell is at shoulder level.
Hold the contracted position for a brief moment as you squeeze your biceps.
Inhale and slowly begin to lower the barbell back to the starting position.
Repeat the process for the recommended amount of repetitions.