When I was young i'd always brag about how I never get hangovers. I used to drink and party til like 9am then go to lectures, then nap for an hour then go out and party again, and I never got a hangover.
Now I have 3 drinks and i'm disabled for a week.
It's gotten to the point where I have to turn down invites to go for a quiet drink during the week because I will legit wake up at like 5pm the next day feeling like death