Polyana Viana, a 26-year-old MMA fighter from Rio de Janeiro, beats up a man black and blue when he tries to rob her. Viana, a strawweight fighter in the Ultimate Fighting Championship (UFC), has won 10 out of 12 fights so far in her career. A man when tried to rob Polyana with a fake gun, she stood up and punched, kicked and then applied a choke hold on him. The man was soon arrested.