Is it possible that different alter don't have the same pain sensitivity, or do not experience the same kind of pain?
I noticed (again) because I suffer from bad back pain in the last few days (it even hurts with each breath). But Alea-Me doesn't notice this at all, when he was out in the last days. In reverse he suffers form a lot of heavy headache which I and others do not. We observed it more than once that even heavy headache can be disappear suddenly as soon as someone else is more present.
And then there it is this one alter who is experience pain as pleasure, who is craving to experience physical pain and seems to enjoy it. But if someone else is in the body again it is just normal unpleasant pain.
It is a strange thing, because the body is always the same and the nerves certainly will not change on an daily/hourly base
-Kiran