Most adults who have enjoyed an alcoholic beverage have experienced a hangover at least once in their lives. Who can forget the brain pounding headaches, dizziness, and nausea?

But why do we feel terrible after a night of drinking, and is there anything we can do to not feel as bad? Hank of the educational series Sci Show explains that the main culprit is dehydration in his newest video The Science of Hangovers.