text: A document on the website, "The Complete Guide to the Alexander Technique", self-described as "the most comprehensive source for information about the Alexander Technique worldwide" states: "Could it be that asthmatics are particularly prone to constricting their nasal and throat passages when trying to take deep breathes? And could it be that this is caused by poor breathing habits, habits that may well have been learned in early childhood? If so, reeducation of the sort the Alexander Technique provides could make a huge difference in their lives." Two Cochrane reviews of the relevant literature, one in 2000 and a follow up in 2012, stated that "no trials were found that met the selection criteria" and concluded that "robust, well-designed randomised controlled trials are required in order to test claims by practitioners that A.T. can have a positive effect on the symptoms of chronic asthma and thereby help people with asthma to reduce medication."