need a woman's perspective here... why are there so many women with big, undefined upper arms? Here is an example.
View attachment 30654
Is it a bad diet, no exercise, or what? My wife commented on how many women have really bad arms at the same time they aren't really fat.
women have higher body fat then men do. On top of that, they aren't as muscular as men are. The girl on the left has low BF, it looks like she doesn't lift. Girl on the right has high BF and doesn't either.