Obviously this won’t work for all sports, but things like football, track, soccer, it would allow for de-gendered team, even allowing athletes with the skills but not the genetically-endowed physical attributes to have a place to play.
Note: I know very little about sports and being on a sports team, so please point out anything that doesn’t make sense.
That’s not due to performance enhancing drugs and body mods though, right? That’s due to diet and associated lifestyle.
Although I think I still see your point; some sports not only encourage but require the top echelon of the sport to sacrifice their long-term health for the sake of a competitive edge. I’d use sumo as a cautionary tale as to why it’s a bad idea, rather than proof that athletes are willing to make that sacrifice.