Sore muscles

Oh, I'm paying for it.  I can tell the muscles in my body have not been very active for a month.  Each time I stand, walk, sit,....  Well, let's face - Move!  - the muscles in my body hurt.  I'm going to especially have to get some exercises to get my back stronger.   I've struggled with osteo-arthritis in my back for years.  But I've stayed active enough that it's usually been workable.  Today though, it hurts.  Part of the process, I guess.