11. Jason Statham: Transporter
Source: Iconosquare
Jason Statham did not need a trainer to become the living weapon in the movie, Transporter. He did it all by himself by significantly increasing his gym time and dedicating a good chunk of his time to learn mixed martial arts. His training in martial arts, in addition to his gym workouts, ended up sculpting the solid physique you see in the movie. This is why he was capable of doing most of the stunts in the movie by himself.