Originally Posted by
Destinas
There are thin, medium, and bulky humans on Kul Tiras. It was explained that the reason they are like that is the fact that they have had to live harsh lives, so they've had to adapt. Kul Tiras is also shown to be quite cold in some areas, as well as being a seafaring nation with, presumably, a fishing culture. Thus, muscle guts.
It's pretty noticeable if you look at anything from Blizzcon 2017, or any screenshots/videos that have been around since the alpha, that there are are several different body types for the humans there. There have been several topics about it on MMO-C. Pictures of Jaina's mother (who has the standard human female build) have been around since Blizzcon. You post on here often, so it's not like you didn't have any opportunity to see any of this.