With the warmer weather I have been feeling much less pain. Tree has suggested that it might be the warmth, but today's storm front did not lower the temperature much (still near 50 C) and my joints are now sore. I cannot tell about the muscle groups since I was feeling better with the spring weather and went out and worked in the gardens; so my muscles were sore before the rain began.
I am starting to wonder if some of the joint discomfort/pain might be arthritis. Osteoarthritis is common with EDS, but I am still considered quite young for it to develop. Mom developed it in her early 40s, so it might not be too far fetched. I'll have to remember to ask at my next appointment.