You don't have to drink much. I've never vomited after drinking and I had a lot of hangovers (even though I'm emetophobic). I've never been nauseaous either (sometimes the next day I couldn't eat much, but nothing important). I wanted to ask, what do you say your friends, why don't you drink? Because I don't drink now too (I have problems with gastritis so of course now I am afraid to drink alcohol) and my friends think I'm exaggerating. They don't believe me and now rhey think I'm weird.