Some of the numbers seem unreal. Earlier this week I drank 3 beers (1,5L) which is an exception (i mostly do not drink at all) and the next day I had to take sick leave.
Although I am not a heavy drinker (mostly only drink alcohol on weekends), I am fine with 3-4 6.5% beers in a day, or similar consumption of alcohol in wine, especially if not binge drinked but over the course of a day mixed with meals. Even the nights I get totally drunk I very rarely feel sick the next day. The reason: even when I drink alcohol I also drink a lot of water. Usually the next day's sickness is due to dehydratation of the brain. If you keep hydrated (with water!) on top of your alcohol consumption even if you are drunk you won't suffer from it the next day.
Having said that, not feeling sick the next day doesn't mean you don't do any damages to your body and your brain.
20% of the people consume 80% of the alcohol.
Last week I drank 3 liters of beers and was pretty fine. It's when I went for the next liter and vodka when I... were fine, honestly. Not great, sure, and any sport activity was out of question. The biggest problem was what I came home at 5 AM which of course messed up my schedule again.
Different beers affect me differently, sometimes I would feel bad next day from just 2 beers. While it does depend a lot if I was active (dancing) and how much water I took on alongside the beer, the brand itself makes a huge difference. If you experiment a bit you might find that some beers are actually bad. Not sure where this comes from, trace amounts of methanol? Some other contaminants? Not sure but it does make a difference.
Right now my fav beer is Hoegaarden for example :-D
3 unfiltered IPAs? I’m not getting up from bed the next day.