Rain, the star of Ninja Assassin, gets it together for his new film. Credit where credit is due. This is an impressive transformation.
MunFitnessBlog lists the 300-based workout Rain apparently which Rain also incorporated:
50 deadlifts at 135 pounds
50 box jumps with a 24-inch box
50 “floor wipers” (a core and shoulders exercise at 135 pounds)
50 “clean and press” at 36 pounds kettle bell (a weight-lifting exercise)
25 more pull-ups
Although the results are impressive, the volume of work and the frequency required for Rain to achieve this kind of physique would not appear to be appropriate for him as a 'lifestyle choice' as it involved "four months of every day six days a week, twelve hour days" training. (This will include skill and strength work).
Rain himself said he will never workout like this again unless the film is a hit (in which case he will be expected to turn up for a sequal way-honed again).
His diet was largely low carb ("Rain hasn’t eaten rice since the end of last year and has been living on chicken breast, raw fish, sweet potatoes and salad.") - and further details can be found on Ninja Assassin's official blog site here.