Thanks for your feedback. I did this exact regime for about two months last year and lost 5 or 6kg in that short period. I believe I will be able to do the same again. Today, as I write, is my first water fast. It ain't that much fun, but it is definitely do-able and I find 24 hour fasts no problem, generally. I find the hunger gets worse at night, but weirdly, the next day, despite not having eaten for 24 hours, I don't feel particularly hungry at all.