6 Surprising Things That Can Cause Killer Hangovers

Almost any kind of mixer is putting sugar or carbonation into your system, which can lead to bloating. And bloating, in turn (stick with us here), causes your stomach to empty faster—which means you’re absorbing alcohol sooner and feeling the effects faster, says Dr. Schaefer. This causes a higher alcohol level and also amps up dehydration, which means—you got it—a bad hangover the next day. So instead of mixing with soda, try having your drink with water or on the rocks.