STARTING POSITION:
Select the appropriate weight on a EZ bar. Stand straight with the EZ bar with a supine grip and place your back on the wall. Contract your pelvic floor and core while keeping your chest up.
MOVEMENT:
Contracting your biceps, fully bend your elbows while you exhale. Return to the starting position in a smooth movement while you inhale.
TIPS: While your are doing the exercise, move only the elbows joint, make sure you don't move any other part of your body.