Jake Gyllenhaal Reveals Vigorous Workout Regime For Movie ‘Southpaw’

Fresh from his role as a skinny reporter in "Nightcrawler," Gyllenhaal had to undergo workouts bordering on insanity for "Southpaw."

Jake Gyllenhaal has gone through some extreme physical transformations in the past. However, none of them seemingly required the same commitment and hard work as his role in new boxing movie Southpaw.

After shedding more than 30 lbs. for his role as a nocturnal reporter in Nightcrawler, the 34-year-old had to go through an insanely rigorous workout to get ripped for the new role – which means he had to gain back all the weight he lost, plus 15 pounds of muscle to look the part.

“I knew nothing about boxing when I started, really,” the actor explained. “I knew that in order for me to pull it off in any way, I was just going to have to learn how to do it.”

Along with six hours of cardio, boxing, strength training and conditioning in the gym, Gyllenhaal’s six-month-long training routine included 1,000 sit-ups in morning and 1,000 in night, each day. He even had to lift some massive tires in order to beef up.

As if that wasn’t tough enough, the actor had to endure his fair share of bruises and wounds during the filming, as body doubles weren’t used.

“I got hit pretty hard," Gyllenhaal stated in a recent interview. “We were getting hit constantly – sometimes really hard, sometimes not.”

Surprisingly, even after spending countless hours in gym, Gyllenhaal believes people should be more interested in his character’s psyche rather than his physical transformation.

Watch the video posted above to find out more about Gyllenhaal’s crazy workout routine.

Southpaw also stars Rachel McAdams and 50 Cent, and will hit theaters later this month.

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