Why do women have such narrow views on men's bodies when it comes to fitness?

Women have such a narrow view of beauty in men. If you look too muscular women think you are on steroids and they won't date you because it shrinks your testicles and it carries stigma.
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There are men who like skinny women, average girls, fat women, really fat women, women with small boobs, big boobs, perky boobs, hang boobs, big butts, small butts, feminine girls, tomboys, etc. The diversity if men's preferences is much higher than that of women.
Why do women have such narrow views on men's bodies when it comes to fitness?
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