Comicbook.com reports Sylvester Stallone is getting in shape for 'Rambo 5: Last Blood'! br br Stallone shared a video of his workout routine to buff up for the role.br br Appropriately, he was wearing a John Rambo mug shot shirt. br br Stallone's video had the caption "Getting ready for Rambo, Totally immersed in it! 100. welcome to the jungle." br br 'Rambo 5' has no current release date.