> It is not like Westerners have some special physiological feature that makes them do it, it's about lack of practice.
Lack of practice causes a "special physiological feature": ankle inflexibility. For some people it would take a significant amount of time stretching the ankles every day to recover enough ankle flexibility to squat, and that could perhaps still be insufficient, as joint mobility is established based on the range of motion used in childhood.
All the babies/toddlers I've seen (my own kids included) naturally do that "asian/slav squat" - for example to pick up toys from the ground, or when they want to rest a bit without completely sitting, right?
So at which point/age do some of us stop doing that type of squat before "use it or lose it" kicks in?
Lack of practice causes a "special physiological feature": ankle inflexibility. For some people it would take a significant amount of time stretching the ankles every day to recover enough ankle flexibility to squat, and that could perhaps still be insufficient, as joint mobility is established based on the range of motion used in childhood.