Theo James reveals 'Allegiant' fight scenes secrets - sit-ups and baby oil

"You need to actually be fit -- you can't just look it," Theo James tells Wonderwall.com Editor Jessica Wedemeyer while disucssing his physically demanding "The Divergent Series: Allegiant" role. SUBSCRIBE: http://goo.gl/usQSdP About the series: Wonderwall editors sit down with the cast of Hollywood's most popular movies and blockbusters. Tune in as Wonderwall chats with your favorite celebs about their new flicks, celebrity gossip and news before that next big project hits the big screen! And don't forget to get your daily dose of exclusive celebrity interviews, breaking news and gossip on Wonderwall! Visit us on the web at: www.wonderwall.com Like us on Facebook: www.Facebook.com/Wonderwall Follow us on Twitter: www.Twitter.com/Wonderwall