Normal coke is full of sugar which will make you fat.
Diet coke is even worse because all that caffeine will give you adrenal fatigue, shrink the muscle's you do have and deposit it as fat on your mid section.
I hope you are pissed off, enough about this to quit coke.
What's worse is Coke doesn't have sugar, it's corn syrup. The only good imports from Mexico are colas with cane sugar... and I don't drink them neither.
this guy don'ts
Cane sugar is not much better either.