Ronda Rousey will undergo extensive medical testing prior to her return fight vs. Gina Carano. | Dave Mandel/Sherdog.com
A couple years ago, Ronda Rousey made a confession: That a history of concussions forced her to exit mixed martial arts.Rousey hasn’t competed in MMA since a December 2016 loss to Amanda Nunes. During an Instagram Live session to promote her book “Our Fight” approximately two years ago, the Olympic judoka went in depth on her history of head trauma.
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“My concussion history that I had to keep secret for years, so I would be able to continue to compete and perform,” Rousey said. “That’s basically why I had to retire.”Rousey was particularly tight-lipped about those issues during her UFC tenure, even after a knockout loss to Holly Holm in November 2015. That philosophy continued when she transitioned to sports entertainment.
“I think that there was just so much to [that loss], that I couldn’t talk about it in the…