Twisted, straight arm plank position to begin: shoulders stacked over and in line with wrists, hips start square to platform, as you slide the carriage away push out with the lead heel. Top of head to ankles will go into one long line. Then squeeze inner thighs together, use the back heel to pull and slide the carriage in utilizing oblique. As you come back to neutral, a slight untwist will happen with pelvis and you'll start in the neutral position.