I was visiting a Western company that was renting a small space in the same building. Their routine was to never get caught up in the great migration (in either direction).
Consider it was a place where one guy hoarded 15 years of WSJ in his office.
When staff are excellent professionals in the field, they get to do all sort of weird things.
My biggest issue is, that in an office environment I can't use it as effectively as I would like to. At home I tend to spend 20-30 minutes taking a short nap and it really pays off as it boosts my productivity for the afternoon. At the office, I don't have that opportunity :-/
Where I work now local laws require taking at least 1 hours of breaktime per day so I can technically not do that.