"The Masai, most Brazilians, gymnasts (but only when they're actually doing exercises) and anyone who carries rocks on their heads for a living, have an upright posture."
Somebody would give a shot at explaining why (most) Brazilians were singled-out in this example?
Gymnasts typically have a sway back posture, which has some real structural problems that often cause serious issues later in life. This is NOT an upright posture, it is an exaggeration just as a severe slouch is an exaggeration in the other direction.
Somebody would give a shot at explaining why (most) Brazilians were singled-out in this example?
Most people who don't live in a sedentary society probably still have good posture and maintain their natural skeletal alignment. I don't know if this applies to all of Brazil.
Somebody would give a shot at explaining why (most) Brazilians were singled-out in this example?