Bradley Cooper: 'Limitless' with Robert De Niro

Bradley Cooper gets back to work on his upcoming action thriller Limitless with co-star Robert De Niro on Saturday (January 22) in Philadelphia, Penn.

WATCH: Bradley and Robert in the Limitless Trailer

The 36-year-old actor also recently filmed the Hangover sequel in Southeast Asia.

“This movie was so hard to make because working in Thailand is so hot, it’s all guys, real like, aggressive, hard energy. It’s like 95 degrees, 95 percent humidity all the time,” co-star Ed Helms told Access Hollywood.

“You gotta see [the movie]. It’s like, it’s insane … It’s insane,” Ed added. “It’s like intense and hi-lar-i-ous.”