According to comicbook.com, Sylvester Stallone has been hitting the gym hard in preparation for Rambo 5. The 72-year-old actor has shared a look into his workout in a video he has shared on instagram. Stallone wrote in the video caption, “Just because you’ve reached a certain age doesn’t mean you have to feel that age." Stallone is going to be coming to theaters reprising his role as the machine gun-toting warrior in late 2019.