Did you know that hangovers have been estimated to cost the United States $148 billion in lost productivity each year?? I’m sure you’ve heard that drinking dark liquor will leave you more hungover than light liquor, and new studies prove that to be true! But being a Hennessy drinker myself, (who rarely gets hangovers), I have to disagree! Either way, check out the scientific facts after the jump, and see what to drink if you wake up on Black Friday finished! @iBLONDEgenius