I know...not supposed to have these things: coffee & diet sodas...but I love them!!! I do find, though, that my consumption dwindles to just a couple cups a day instead of a pot or two of coffee! And...I'm still drinking my water. I had no problem the first time on Atkins - lost 50 lbs. and never gave them up...I just use heavy whipping cream in my coffee instead of any other type of creamer...if it's not available...I drink it black. I think everyone is different, though. I just can't even think of the headaches I would have if I totally gave up caffeine