Begin with a barbell loaded on the floor. Adopt a wide stance, and then bend at the hips to grab the bar. Your hips should be as far back as possible, and your legs nearly straight. Keep your back straight, and your head and chest up. This will be your starting position.
Begin the movement be engaging the hips, driving them forward as you allow the arms to hang straight. Continue until you are standing straight up, and then slowly return the weight to the starting position. For successive reps, the weight need not touch the floor.