I have had 4 pints once in my life - in the early '80s a friend and I were working at a hospital in Macclesfield and we had gone to Manchester to sit an exam. I am pretty sure the pub we went to afterwards was in Manchester and he then drove us home!
I was mainly a red wine drinker, but I stopped drinking alcohol altogether over 20 years ago.
It has the opposite effect on muscle that testosterone has - don't waste that training.