Diet soda, my friend. (So you are like a cat on a wall! lol). I know a lot of people like tea, but it’s at least as bad for you as anything they put in soda. I personally drink a lot of Diet Rite (which is a lot healthier than most sodas) and generic Crystal Light (which may or may not be healthy though I have not checked the sugar content in it. It’s better for you to ask your doctor and you may get a good suggestion. Stay away from sugar but not from your job!