You are misinformed. All vaginas fold flat when not in use, the pelvic muscles have no effect to diminish the size during that time.  

 :::My surgeon, and any other reputable surgeon, will also tell you this. They will also tell you that sexual intercourse is not a substitute, referring to a patient who came back to him after a few years with a very narrow vagina, due to lack of maintenance, as they thought sexual intercourse was enough to keep the vagina open. I'm a lesbian, yet I dilate because I want to have the same capabilities as my partner. 

 :::There will be women who are happy with more narrow vaginas, and that's their choice, but actively discouraging dilation to others is a recipe for disaster.   

 ::::Nowhere did I discourage women from dilating. Did you see the link to TM's instructions? In fact I thoroughly discussed all the issues. Is this the best explanation you have for repeatedly reposting a description that has harmed both the public's and medical professionals' understanding of our lives?