STARTING POSITION:
Select the appropriate strength of the band. Put your right heel on the band and grab the other end with your right hand. You should use a neutral grip. Place your right hand just above of you extending your arm. Contract your pelvic floor and core while keeping your chest up. The band should have tension from the beginning of the movement.
MOVEMENT:
Slowly lower the right hand just behind you bending your arm while you inhale. Return to the starting position in a strong movement while you exhale. Repeat the movement for the specified amount of repetitions and then switch sides and repeat with the other arm.
TIPS: While your are doing the exercise, move only the elbow joint, make sure you don't move any other part of your body.