Ronda Rousey as Co-Host

The UFC Women's Bantamweight Champion Ronda Rousey takes Callen's seat in studio. She dives into her training routine as a kid growing up under the tutelage of her mother, Dr. AnnMaria DeMars, and her evolution as an athlete and a big reason why she's the most dominant fighter in the UFC today.

Ultimate Fighting Championship Ronda Rousey