5-6 litres a DAY?
HOW? I can just about manage the 2 litres (usually a bit less), the thought of that much, urgh...
It was wayyy to much I'm probably lucky to still be hear sometimes lets just say "waste" water came out of both ends . I lost daily most of the time(scale obsessed) on Cambridge and that's what made me keep my intake up as I was convinced that was why and at the time us big water drinkers were getting the big losses.
I've done Cambridge 4 times,first time I lost 5st in 3 months and two stone doing it for a month and the last two times flopped I just couldn't do the water.