re: Poker & Drinking while playing live games (or online)
I think my best ideas and intuitive insights are often filtered by anxiety. The slight decrease in inhibition of a single drink is great for me, in many intellectually challenging contexts.
I tried that programming once or twice, and it really helped. I coded faster, and better. Two drinks is too much, and clouds my judgement.
I haven't [recently] drank while playing poker, but I'm guessing one drink could be pretty ideal for me, most nights.
But I'm still building my foundational skills and experience, and I prefer sobriety most of the time, so it might be a while before I find out for sure!