Well, I can see that my opinion is not a popular one, but I stand by it. As a skinny-arsed bloke, I find sitting down for long periods very uncomfortable. The l

Well, I can see that my opinion is not a popular one, but I stand by it. As a skinny-arsed bloke, I find sitting down for long periods very uncomfortable. The literature seems to agree that women are more able to sit upright for long periods, though there is no consensus as to why. > Pretty much all differences in this regard can be attributed to the fact that the female pelvis needs to accommodate giving birth I don't doubt that this is true, but a thing can evolve to serve two or more purposes. Feathers likely initially evolved for the purposes of thermoregulation, as well as to serve mating behavior.