everytime this argument comes up, there always comes this "strength vs stamina argument." people tend to assume that women have greater capacity for endurance events. this is not true. we can look at it physiologically, where men have larger hearts and lungs relative to body size (which means they can pump more blood and oxygen around to sustain physicalactivity better) as well as more red blood cells, hemoglobin,and platelets. and these are not slight differences, they're sometimes 50% greater than females. all of these put together translate into greater strength, speed, endurance, and even pain tolerance than women. for proof, look at world record times in any foot race, and the men outperform women considerably. furthermore, because women have lower levels of bone density, they are more prone to stress factures and injury