I've found that the longer I stay in one place, my joints just get stiffer. But it hurts to move, so I can't win for losing.  The best thing I've found is to have a prescription of some type of steroid (prednisone, cortisone, etc. whatever your Dr. thinks is best for your level of RA).  I have an extreme case, so I am on it everyday. But if you don't need it everyday, it is a great to have as an as-needed anti-inflammatory. So it will bring your flare-ups down.   In the meantime, get comfortable on the couch or some spot where you can relax. Use an ice pack on the joints that are inflamed the most. But remember to get up and move around from time-to-time so you don't get locked up.