Trying to watch your calories by ordering a rum and Diet Coke? Put down the highball and read this first. According to a study at Northern Kentucky University, pairing liquor with diet mixers gives you a higher breath alcohol content level. What’s scarier is that it won’t necessarily make you feel more drunk. The researchers believe that the sugar in regular soda slows the rate at which you absorb alcohol into the bloodstream. Score one for the sweet beauty saboteur.