Having more strength is not always an evolutionary benefit, for men or women. If it were we would all have the hormone levels of a professional body builder. Ha

Having more strength is not always an evolutionary benefit, for men or women. If it were we would all have the hormone levels of a professional body builder. Having more upper body strength and being generally bigger costs calories and there is an evolutionary incentive to be physically smaller (to a point). Also building strength is an adaption to stressors, by exercising the muscles. If it is the males who do the majority of the hunter/gathering then they will be getting more exercise and consequently growing stronger. It's not possible to consider male and female evolutionary pressures separately. If males have adaptive pressures to grow stronger and evolve stronger, then females would have some of the opposite pressures.