There's more variables than just "don't drink so much". Just the other week I woke up with a hangover after having two (4.5% ABV) beers. And this is coming from somehow who often measures their intake in liters, not bottles.
Whether you get a hangover or not is dependent on pretty much all the variables of alcohol metabolism: how much you drink, how fast, at what time, whether you had a full stomach, what type of food you ate, the type of alcohol (dark vs clear), whether you smoked cigarettes, etc. While you definitely shouldn't drink so much, I think it's a bit disingenuous to simply the issue down to how much you drank the night before.
(My personal theory for the two beers night is due to me drinking them some time between 1 and 3 in the morning.)
Whether you get a hangover or not is dependent on pretty much all the variables of alcohol metabolism: how much you drink, how fast, at what time, whether you had a full stomach, what type of food you ate, the type of alcohol (dark vs clear), whether you smoked cigarettes, etc. While you definitely shouldn't drink so much, I think it's a bit disingenuous to simply the issue down to how much you drank the night before.
(My personal theory for the two beers night is due to me drinking them some time between 1 and 3 in the morning.)