Last week's thread is here:
http://www.52fastdiet.co.uk/viewtopic.php?f=8&t=5400#p55914
This variation of 5:2 was inspired by Wildmissus, on this thread, begun in April:
http://www.52fastdiet.co.uk/viewtopic.php?f=6&t=3814
There's no doubt that a substantial number of posters are happier without any food on a fast day . The reason for this, IMO, can be found here:
http://www.52fastdiet.co.uk/viewtopic.php?f=3&t=1499