SETUP: Attach a straight bar to a LAT PULLDOWN machine and sit with your chest up & shoulders back. Take an underhand-grip of the bar then lean back to allow your arms to fully extend.
REP: Curl the bar overhead, keeping your elbows locked in position as best you can.
TIP: This exercise places your biceps in their shortened state, where they are strongest. You can use exercises like this to really drive the muscle to failure.
