STARTING POSITION:
Suspend your TRX at around knee height. Grab the handles in each hand and lean back. Maintain your body in a straight line and your arms fully extended retracting your shoulder blades. You should use a prone grip. Contract your pelvic floor and core while keep your body straight.
MOVEMENT:
Bend your elbows until your thumbs touch your ears while you exhale. Return to the starting position with a smooth movement while you inhale. Make sure your shoulder blades are always retracted.
TIPS: The exercise key is quality over quantity. The trick is to perform the exercise using proper form. Make sure you only move your elbows when you perform the exercise.