I notice after doing a specific stretch for an extended period of time (ie. middle splits, butterfly stretch), when I relax the muscles I stretched feel as though they get a bit tight after I've stretched them (almost like a rebound effect), and sometimes I'll feel the stretch in another area that I'm not even stretching (ie middle of my back when doing butterfly stretches). Has anyone experienced this "rebound" effect? If I want to see a professional about this, who do I go to (ie orthopedist, acupuncturist, physical therapist)?