Washington [US], February 22 (ANI): American actor and filmmaker Sylvester Stallone is still recovering from the stunts he performed during the shoot of the 2010 action film ‘The Expendables’. The actor revealed that he recently underwent his sixth back surgery due to injuries incurred on the film set, according to The Hollywood Reporter. The actor stated in an episode of his family’s reality show that he never physically recovered after filming the 2010 picture ‘Expendables.’ “There’s something romantic about doing your own stunts,” Stallone shared in the fourth episode of ‘The Family Stallon…