Sex testing in sport is something not talked about a lot and many may not actually know how much this actually takes place and the history behind it. We had Sandy, a PhD candidate on to speak about her research regarding the history of sex testing in sport and what problems continue to arise with this invasive practice. We were inspired to have this conversation by the controversy over trans female athletes competing with biological females in elite level sport and whether or not there is a true advantage for the trans athletes, the playing field is actually level, the requirements for trans athletes are fair, and if the human rights arguments are causing a further problem. This is a very gray subject matter with no easy right or wrong. Sandy speaks very candidly about the problems with sex testing period and how it seems that there is still a very blurry idea about what it means to be female.