SETUP: Stand upright, chest out and shoulders back, and hold the bar with your arms hanging straight down. Your elbows should be slightly lower than the Arm Blaster.
REP: Keeping your elbows tight to your sides, curl the bar up towards your shoulders by squeezing your biceps HARD. Once at the top, control the weight back down to the start position.
TIP: No swinging! The idea behind the Arm Blaster is to restrict the involvement of other muscle groups, so swinging the weight up defeats the point.