Mountain Dew has both large amounts of sugar and caffeine. Either ingredient on its own would make a person full of zing. In combination, it'll crank you up (short term, until the inevitable sugar crash). read more
My friends always talk about how Mountain Dew makes them hyper and one of my friends isn't even allowed to have it! read more
One can or glass of Mountain Dew may not necessarily be enough to cause a sudden, temporary blood sugar spike (i.e. hyper), but drinking a case or 2-liter bottle may. read more