i do both of these things too, not so much drinking tho. and i can really feel the difference in my performance on a day right after i drink heavily. try to cut back on that, or keep it to days when you dont lift the day after (for me, its none other than friday and saturday nights). as for blazing, i smoke a shitload, have lifted high before, etc. a few tips from a vet:
1) DO NOT smoke before you lift. whenever i used to do it, my heartrate would skyrocket. its prolly not good for your heart and who knows you might have a heart attack from it. so stay away from that. plus the cottonmouth is brutal lol!
2) the more you smoke in general, the more you will feel "high" during a lift. i have a theory, that goes: when you smoke, THC is stored in your fat right? well when you lift and are burning fats in your body, that THC is released back into your bloodstream. ive felt this before, where i dont smoke the entire day, go to the gym and halfway through feel like im ripped. its not that strong of a high, just something ive experienced.
smoking affects cardio ALOT more than lifting (if it affects lifting at all). i used to run cross country, and now i struggle to run 6 miles straight. i still do cardio now, but im not gonna give up smoking just yet so i could run farther (at least til im out of college).
besides, think about it: alcohol is like poison to your body, dro is an all natural flower that people have enjoyed for many many years. which one do you think is better for you.
hey hey hey, smoke weed everyday