Gotta do those stretches! I need to as well =/ I'm getting out of shape.
Toward the end of the loop, her right shoulder has this strange shrink with a shape akin to woody's arm that goes thin at the shoulder in Toy Story. The physics of the chest is nice, and you added motion for the hair and even the belly to an extent. I respect people who take the time to try to make their 3D work =w=b