Only around the neck. Increasing gravity helps a little. I guess I need to investigate what all the parameters do. Anyhow - it does seem to decide when it has done enough but that depends on the pose. I've just tried another sitting pose which has been going for much longer. I can still see yellow on the Stress thing - even a couple of red dots - after 15 minutes.

By the way - how many threads can I tell it to use? As I said, I have a new i7 Skylake CPU which has not reached 90% yet in task manager.