Found this online and thought it was of interest. Jason uses Logan Hood as his fitness coach and the results show.
"If you want to get in incredible shape, go to prison. That's what The Expendables star Jason Statham did three years ago. While prepping for his role as convict Jensen Ames in the sci-fi action flick Death Race, Statham strolled the yard at California's Corcoran State Prison and watched how the inmates got into what the 38-year-old actor admiringly calls "prison shape" (versus what he disdainfully describes as "gym shape"). The ripped cons worked out with explosive strength moves but little equipment. "They had banned weights from the prison yard," Statham recalls. "They didn't have the big, fat machines you have in the typical gym. These guys were using their own bodies for lifts, pullups, situps, and squats. They employed full-body-weight exercises and old-school gym techniques that seemed to work wonders."