Women and Men have the same physical opportunities

In this round, we will both make our opening statements; this round will not be for rebuttalsI contend that men and women are biologically different, and that men are stronger. By this I do not mean to say that all men are stronger than all women, but that on average, men are stronger. This, I believe, is due to biology. As stated above, I will defend this in three ways: biology, evolution, and common sense (meaning looking at today's society for answers).1. BiologySkeletons of males and females are different. Your statement was that men and women have the same physical abilities. Because women have (skeletal structure) shorter legs and a broader waist, it would seem that women would in general be slower than men. This means that if a man and a woman train the same amount, the average man will beat the average woman in a standard speed race (100-200m).Women have a smaller lung capacity than men do. This means that men can more efficiently allocate oxygen to their muscles, making for a more athletically able body, assuming muscle types across both genders to both be similar in aerobic/anaerobic state.Women's bodies contain 20% less red blood cells than men do. Since red blood cells are responsible for carying oxygen around the body to supply different parts of the body with "fuel", women tire much more easily than men do.The male body contains approximately 50% more muscle mass (give or take) which translates directly to raw strength.2. EvolutionThis argument will attempt to persuade Pro and the audience that men have evolved to be stronger without providing evidence to that effect, but rather, to show that it is reasonable to think that men are stronger, again, on average. I assume that Pro believes in natural selection. If not, please say so and I will remove this point from the debate.During all stages of human prehistory and history until the modern era, women have stayed at home caring for children, while men have been tasked with working. This is how gender roles have played out, and for obvious reasons. Women conceive and bare children. They stay at home while pregnant (this is talking in a prehistorical landscape) and have to nurture and breastfeed after birth. Since such a large amount of time is spent with the child, it stands to reason that if one parent had to work and the other had to tend to children, then the mother would be the one attending to the children. Over time, this led to the more desireable males (the ones who were more likely to produce) being the stronger males, while the more desireable females be the most furtive and/or "good with kids". Since women were not being naturally selected for their strength, it is a trait which did not develop as it did in men.3. Common SenseIt is common sense to say that men are stronger than women. I will attempt to show this to Pro and to the audience using three examples from contemporary culture.a) NFLThere are no women in the NFL, arguably one of the most grueling training courses and competitions in all of sports. To be clear: women are allowed to try out, join, and play in the NFL. b) OlympicsMens' competition numbers when it comes to physical strength consistently beats that of womens'.c) Personal Experience (not hard logic, just simple anecdotes)I have seen many men and women; I have seen wimpy men and strong women. However, when thinking about all of the bodies I have seen I can be sure that the men I have seen by far can outperform the women have seen when it comes to physical performance.