Why does "civilization" make men in particular very weak?

Why does civilization make men in particular very weak?

"Among them, the women buy and sell, the men stay at home and weave, and in weaving the Egyptians push the weft [threads on the loom] downwards while all others push the weft upwards... Women urinate while standing, men while sitting." (Herodotus, Histories, Book II, 35)

Education systems target men/boys
Religions target men/boys
Lack of consistent stimulus for men/boys
Something else
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Why does "civilization" make men in particular very weak?
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