Women's and men's sports have been predominantly segregated for a reason, in non segregated sports (marathons, etc) men often dominate due to biological reasons others have already mentioned above. A person who has gone through puberty with testosterone has an unfair advantage over someone who has not. Trying to compare that to black vs white is unrealistic because that kind of dimorphism does not exist between different human ethnicities. Never has.
Why not at that point use T-counts as a weight class of sorts?
I don't think it is fair to exclude trans people from sports altogether. I think a third segment should be created for trans people, otherwise transwomen should compete in men's sports.
In the state of how it is now, how many people would be competing in a trans-only bracket if it existed?
Until transitioning is more normalized it sounds very niche.
Along with the advantages of being biologically male, trans women will also never have to experience the biological disadvantages of bio women in sports- Trand women will never have to run a marathon with cramps or keep competing when their tampon is leaking & staining their clothes.
I'd figure that most women undergoing rigorous training are under too much stress to have periods, and women don't have a penis and balls to contend with when running or otherwise aiming to move around with actual grace and footwork. Something like that and broader shoulders can actually lend to more clumsy body movements in martial arts at least.
I've at least seen periods cease over work stress that doesn't have a ton of exercise involved.
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