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Human breasts are unique among primates in that they are permanently swollen. Besides [[grool]]ing and dilated pupils, engorged nipples are a sign of female arousal. | Human breasts are unique among primates in that they are permanently swollen. Besides [[grool]]ing and dilated pupils, engorged nipples are a sign of female arousal. | ||
==Attrative breasts== | |||
Boobs are preferred by men today to be round, firm and shaky, in fact firmness is more important than size,<ref>Kościński K. 2019. ''Breast firmness is of greater importance for women's attractiveness than breast size.'' American Journal of Human Biology, 31(5), e23287. [[https://onlinelibrary.wiley.com/doi/abs/10.1002/ajhb.23287 Abstract]]</ref> | Boobs are preferred by men today to be round, firm and shaky, in fact firmness is more important than size,<ref>Kościński K. 2019. ''Breast firmness is of greater importance for women's attractiveness than breast size.'' American Journal of Human Biology, 31(5), e23287. [[https://onlinelibrary.wiley.com/doi/abs/10.1002/ajhb.23287 Abstract]]</ref> | ||
==Runaway hypothesis== | |||
Breasts may have been [[Fisherian runaway|runaway selected]] to mimic the [[buttocks]],<ref>Fuller, R. C., Houle, D., & Travis, J. 2005. ''Sensory Bias as an Explanation for the Evolution of Mate Preferences.'' [[https://www.jstor.org/stable/10.1086/444443 Abstract]]</ref> also explaining men's immense thirst for their sight. This means boobs have no biological purpose besides aesthetic pleasure and passing on this trait to increase the physical attractiveness of the female offspring. To the contrary, [[Good genes hypothesis|good geners]] would claim that well-formed boobs are honest signals of reproductive value, e.g. that they are evidence of the ability to grow fat deposits which are suggested to be prerequisites for reproduction,<ref>https://brill.com/view/journals/ijee/50/1/article-p87_5.xml</ref> however there is little evidence for this being the case. | |||
== References == | == References == | ||