TRX straps at Mid Length Place your working hand beside your chest, and reach your free hand up the TRX main strap toward anchor point. Drop your shoulders down. In a circular motion, rotate your free arm toward the ground while extending your working arm. Keep your hips square. Drive your working elbow straight back while rotating your free arm up toward the anchor point. Common Faults: Breaking at the hips; using rotational momentum to pull body up