I'm now just gettling into cycling and I drink a LOT of diet pepsi. I know its worse than water, but I don't know why. Has no calories, carbs, fat, nothing .What kind of negative effects does diet cola have? I have been a heavy drinking on diet pepsi all my life and I'm thinking of quiting it now. But if I do limit myself to say 5 -6 cans a week is that still going to effect my riding?