This element is divided into three phases:
first phase (0:18-0:45)
This phase is good for beginners.
Once the giver's hands are supporting the shoulders of the receiver, he keeps his arms straight and solid, but slowly bends one knee. Then he re-staightens his leg and brings it back to its original position before repeating this on the opposite side.
Continue doing this in a nice slow rhythm.
second phase (0:45-1:02)
This is an intermediate level element.
Once you feel comfortable practicing the first phase, do it bending one leg and elbow at the same time.
When bending one knee, start bending the opposite arm as well, then bring both back into a neutral position before repeating the same moves on the opposite side.
third phase (1:02 - end)
This deep twist is a more advanced element.
Once you bend one leg, release the opposite shoulder of the receiver and move your hand as shown.
Your free hand moves to the back of the receiver, providing some rotational pressure. This can change the intensity of the receiver's breathing, so soften the pressure when they inhale soften, and slightly increase it when they exhale.
Note how the giver continually moves and adjusts the receiver's hips to keep her spine aligned and pressure evenly distributed...plus both his legs are bent almost the whole time to create a good angle between his feet and her hips.