Sylvester Stallone is hitting the gym as hard as he can to get in the best shape possible for 'Rambo V'.



The 72-year-old action legend first played Vietnam War veteran John J. Rambo in 1982's 'First Blood' and is now reprising the iconic role for what is expected to be his final outing as the character.



Stallone has taken to his Instagram account to show his followers the hard work he is putting in and has urged any fellow stars who complain about their fitness regimes to shut up and accept it is a "privilege" to be able to devote so much time to health and fitness.



Stallone was initially expected to direct the movie as well as star, but he is now going to hand over control to somebody else.