I've been all over the spectrum. I went many years of no drinking.
Then some drinking.
Then some time when I was drinking 2 drinks a day.
I'm one of those people that processes alcohol seemingly well. I never ever wake up feeling groggy or even remotely hung over.
6 months ago, I would have said I can have two drinks in the evening and I wake up feeling exactly the same as if I'd nothing to drink.
And then I bought an Oura ring.
https://ouraring.com/. I was honestly surprised at how much better my sleep and readiness stats are the morning after no drinks.
My resting heartrate is almost always 3-5 beats higher on a night after having had 2 drinks. And my REM and Deep Sleep are always significantly better on days when I don't have a drink. And I would have said I sleep fine on nights after a drink.
Really interesting.