Does your body need to rest between rolfing sessions?

Yes. According to paul wirth : “while sessions can take place a few days to a few weeks apart, the ideal is around one or two weeks apart. This strikes a balance between continuing the process and allowing the body and brain to settle into the changes in each session.” see: http://mosaicbodywork. Com/faq/.
Yes. Yes rolfing is a technique that uses deep massage and can lead to muscle soreness. You must allow the muscles and connective tissue time to recover between sessions otherwise you will damage the tissues.