Never ever been on a diet in my life but a rapidly widening waistline over the last few years and meeting a obese forumite regularly on the bus : ) has led to this. I quiet like it, although the 600 day calorie is fook all and quite tough going, it,s only for two days and I like the self discipline aspect but not worrying the rest of the week, although, as a bonus it has also led to more sensible behaviour on the normal days....5lbs gone in 4 weeks.