Following discussion on this thread, I contacted Action for ME to express concern about the document and ask for the research evidence on which the advice in the document was based. The staff member who replied asked me for more details of my concerns and seemed bemused by the idea that there needed to be research evidence. I therefore decided to write a personal open letter to Action for M.E. detailing my concerns and asking that the document be withdrawn. Here is the letter. It has been sent, so please don't waste time and energy proofreading it or making suggestions for changes - it's too late.