In Japan, drinking with clients or co-workers is a mark of company loyalty and considered “part of the job”. In fact, refusing a drink from a boss is an insult and can damage your career. These photos show how some people suffer from excessive drinking days.
Made my own experience, i just got worm they where done...:))
I think it's in the genetics. For 500 years Europe drank a lot o vine..they hat tea...
https://www.flickr.com/photos/jefflippold/213758817/in/photolist-jTz3R-SwoEA