interesting! I drink loads of fizzy water, especially this week and I haven't felt any loss. I've put it down to bloat (which helps me feel full so I quite like it) but now I'm all a panicked! Imagine not losin cus you're full of gas! But surely gas doesn't have a weighable mass or something like that dragged from the darkest recesses of my memory? I dunno -look what you've done to me!!!!! ARGH!