They're entirely overlooking genetics in this. Different people process different amounts of alcohol differently quickly. I've seen people with decades of experience with alcohol get unreasonable after some beers, and have a shit time the entire next day. Meanwhile i and my motherly line of ancestors can drink (compared to the people around us) ridiculous amounts of alcohol really quickly, and for extended amounts of time, sober up quickly, stay in control throughout, and not suffer hangover.<p>It's also not entrainment. My parents and grandparents drink daily, and not in small amounts either, while i drink maybe 6 times or so a year and i have exactly the same kind of quick processing and resistance as they do.<p>Interestingly it may be related to the fact that my motherly line of ancestors has a lot of east-european blood in it.