I think this is bulls
hit
I think you are just less willing to put yourself through such torture. I recall, when I first had a proper job in my early twenties that hangovers could last until thursday, and after swearing off the drink all week you began to feel good just as the next weekend approached.
Spent days dying on the couch where I never left the house and didn't get up until 3 - and when I did get up I ate crap all day and then went and ate crap food - as did the rest of them (in my gang anyway).
Now - I do have good nights out, last night being one of them where I drank until 5 which is kinda rare these days admittedly - would just go home at 3 when everything is close.
This is a good difference in itself, weekends a few years ago involved 24/48 hour sessions - putting your body through hell really.
But I still party hard when I want, as do all my buddies, but still have enough pep for a game of golf in the morning because I eat a nutritious breakfast a don't drink until it becomes bright.
I'm very successful right now so I would urge the posters here to take a leaf out of my book, you might be a better people as a result