I just got back from 3 weeks in a part of Russia with no MacDonalds too (not that I'd eat that filth if my life depended on it anyway). Thought I'd chime in on the thread so far
Go Go Blanket-Generalisation Mode!!
Russian food: varied but pretty bland, though practical. I was enormously glad to get home to my own kitchen and fridge though.
Russian physiques: everyone is pretty thin and fit-looking, apart from every single woman over 35 years old, who are all huge.
Haggis: rocks, end of story.
More later, time permitting.