Place your feet together on the handles of a trx which is around 30 cm of the floor. Lie on the floor face down and place your hands slightly wider than shoulder width apart while holding your torso up at arms length. Support your weight on your feet and hands. Keep the shoulders far from the ears retracting your shoulder blades. Contract your pelvic floor and core while keep your body straight.
Move your knees towards your chest maintaining your hips and back in a stable position while you exhale. Return to the starting position in a smooth movement while you inhale. Make sure your shoulder blades are always retracted.TIPS: Make sure you only move your legs while you perform the exercise. The exercise key is quality over quantity. The trick is to perform the exercise using proper form.