I admit that I don't understand ME. I assume that nobody does. But it seems you maybe have not understood my suggestion. It has nothing to do with suggesting that ME is a sleep problem. It is theory free, as I said several times. It is simply about getting objective evidence for what sort of advice might actually help. I am very happy to accept that advice on sleep might be a bad idea. But it is currently given and we need evidence one way or another. Otherwise we are just following the BPS brigade's approach.