I had never heard this so I thought someone else here might benefit from hearing it. I saw my pulmonologist and it was a particularly painful day for me. He told me "lupus likes routine". He told me to get into a routine, preferably that includes at least a little exercise and stay in it. He told me that although lots of things will trigger pain, a change in routine is a known one. I didn't know that. I do know that whenever I have to go shopping I pay for it the next day. Anyhow I hope this information might help someone else.