Why are little girls and aunts the strongest and young women the weakest?

Because the little girl is not sensible and the aunt is nostalgic, she is stronger. As for the reason why young women are weak, first of all, they are well-informed, so their thoughts are more advanced, and everything comes according to principles and reasons. Second, young women care about their image, so they have a lot to control and suppress themselves, which makes them look weak.