Suspend your TRX at around knee height. Lie on the floor face down and place your forearms on the floor. Support your weight on your forearms and place your feet on the handles of the TRX. The TRX should be perpendicular to the floor. Keep the shoulders far from the ears retracting your shoulder blades. Contract your pelvic floor and core while keep your body straight. Squeeze your feet between them. Don't let the hips go down.
Start moving your body backwards by moving your shoulders. Return to the starting position in a smooth movement.TIPS: The exercise key is quality over quantity. The trick is to perform the exercise using proper form.