I have a suggestion for you, Brad:

Stop drinking diet soda altogether.

Since you're clearly unhappy with drinking soda containing aspartame, I won't even get into that. But the molecule that is removed from sugar in order to make Splenda calorie-free is also the molecule which breaks down the sugar in your body...what this means, basically, is that Splenda actually causes weight gain.

So throw out the diet soda. Throw out the Splenda. Drink some water.