I spent most of my twenties drunk and by the time I got around to my thirties it was just too much to deal with the next day. Every morning just felt like I was gonna die for the first half of the day. Smoking weed actually helped me quit drinking and smoking cigarettes. Can't remember the last time I had a drink. More than ten years now, at least. There was a definite improvement in my health and mood not being hungover and stuck in constant recovery. Plus, 30 was around when my body started doing the whole "this is never going to fully heal" thing, so having one less massive stressor probably saved my ass from being in much worse condition now. Since you're still young, it would be in your best interest to start thinking about sobering up and getting in shape now before you get to a point where getting started is too physically overwhelming. And really, it doesn't take long. Within a few years of sobriety and working out, I was pretty happy with the differences. Life under capitalism is already hard as hell, drinking and putting your body through the wringer just massively increases the difficulty level.