Thank you for your comments! I know this is not something that works for everybody, and I'm not suggesting that anybody should try it unless they feel at least sort of comfortable with the thought of doing it. It is peculiar, the way I seem to relax more when lying down. Maybe the fact that I take a painkiller beforehand, so my back won't bother me so much, helps. (It's just an over the counter Ibuprofen, no relaxant, but lessening the physical pain a little is of course relaxing in itself.) And yes, I focus a bit too much on T's reactions, trying to interpret his facial expressions and body language, when I can see him - not to mention that I worry about whether I should be looking at him or not. (I'm Swedish. Swedes don't do eye contact much. My T is not Swedish, but has lived here for over 30 years.) That being said, I do miss seeing his occasional smile
Maybe it's also partly because I tend to formulate my issues when I'm lying in bed late at night, which is one of the times I feel more or less safe. But perhaps the cause-effect works in the other direction, because of the mind/body communication thing FeelTheBurn mentioned.
It is interesting, at any rate. I think tomorrow's session will be difficult because I am going through an extremely rough time at the moment. Remains to be seen whether lying down will make it more or less difficult.