I think we have finally cracked it at last. If you can stick with the 5:2 diet, and try out different things I think it should work for almost everyone. Husband is now the weight and fitness level he was when he was 15 (so he says….) and best of all a client who had multiple failed IVFs and needed to lose weight before another one was attempted just did it, lost the weight, looks fabulous and is pregnant at last.