I think I would be both less physically comfortable(because of my back) and less emotionally comfortable.

But, two sessions ago I quit sitting straight up in this business fashion with both feet on the floor, and tucked one leg under the other on the couch like I do when I sit at home to watch tv, or right now when on the computer. I mentioned it the very next session to her, that maybe I didn't feel uncomfortable in the room, but that I was getting even more comfortable without realizing it.