Here’s an ugly preview of the regionality piece I’m working on.
When I break down my data by country, I can see how geography affects the physical definitions of cliques.  Most social groups are (surprisingly) identical across countries, but Bears, Cubs and Gym Bunnies have drastic physical differences:
Bears are bigger and younger in Canada, averaging ~250lbs and 35 years.
Compare to the United Kingdom where the definition of a Bear is the lightest and oldest at ~220lbs and 40 years.
If age weren’t a major factor in the UK, most Cubs from America, Canada and Australia would be considered Bears!