Ronda Rousey is a UFC legend, but perhaps her career would have lasted longer if it weren't for her concussion history.
Rousey, who retired from mixed martial arts in 2016, said during an Instagram Live session that her history of concussions suffered in judo contributed to her decision to retire at age 29.
"I'd like people to understand my reasons and motivations behind things," Rousey said, per ESPN's Brett Okamoto. "I was forced to leave fighting when I was faster, stronger, more skilled and had a better understanding of the art than ever before. It was a really hard decision to understand, one that my body made for me.