SETUP: Attach a straight-bar handle to a cable pulley and set it to a low height. Lie flat on the floor in front of the cable station, taking an underhand-grip of the bar and pinning your elbows to your sides.
REP: Curl the bar towards your shoulders, keeping your elbows locked in place as best you can, squeezing your biceps HARD as you reach the top of the motion and contolling the weight on the return to the starting position.
TIP: Lower the bar all the way! The angle makes the first third of the rep the most difficult portion. This is actually a fantastic forearm building exercise, but in order to reap those rewards we must use a full range of motion.