i notice when i diet without having caffine i do lose more. i did my version of the atkins diet...in there they had notes about how caffine makes you body produce insulin because of the way it stimulates the pancreas. and when your body produces insulin it makes your body take in calories to store as fat.
if you do the Master-Cleanse with caffine i would like to know how it turns out.
my s.o. is a caffine addict too.