Reply #132: breasts (and cleavage) mimic the buttocks cleft [View All]

[paulsby]

and it's thought by many that as man evolved into an upright posture, women developed the enlarged breasts as a visual analog, close to eye level of the buttocks cleft, which would be close to eye level for animals on all 4's.

the VAST majority of breast tissue does not serve the function of milk production. mammary glands are actually quite tiny, especially in non-lactating females. it's the non-functional tissue that serves as a visual stimulus.