In this powerful video, Gleison Tibau like you've never seen him before as he opens up to discuss the extreme sacrifices he's made in pursuit of his career. He says you can expect to see an all-new Gleison Tibau in the Octagon as he faces John Cholish in this lightweight bout. Catch UFC on FX 8: Belfort vs Rockhold, live from Brazil, Saturday, May 18 at 9PM ET / 6PM PT. Online prelims begin at 4:30PM ET /1:30PM PT, followed by FUEL TV prelims at 6PM ET/ 3PM PT. Event card: http://www.ufc.