Enjoying your classes very much. Wanted to share one note that doesn’t really matter in the whole scheme of things, but speaks to the use of the term “vertical plane” the vertical plane moves around the anterior/posterior axis. It is not upright standing necessarily. For example we move in the vertical plane when we do mermaid, and we could do the same thing in our backs, but we might attend to the vertical axis to keep from buldging or hallowing in the Saggital plane. COVID time on my hands. Peace.