Oddly enough, this lesson takes place largely lying on the back. So “on the side” doesn’t refer to the position of the lesson. This lesson follows on the lesson On the side, the sternum becoming flexible, which “really is” on the side. That lesson achieves some amazing differentiation of the abdominal muscles in light of deep reflexes; this one continues around the torso, rebalancing the work of the abdominals and the back extensors. Between working on these two lessons this month, I got more for myself around Moshe’s idea of the chest hanging off the spine than I ever have from ATM before (it’s usually a post-FI feeling from a great practitioner, one that is tantalizingly transformational, but that I can’t find again after a few weeks). We embarked on a month of the spine, and I ended the month feeling I knew the function and freedom of the abdominal muscles beyond anything I’ve done before.