you know jason and you know freddy and and you know leatherface . now and get ready for represent the safety pin killer . that right and in killer workout and a dumb slasher movie if i have ever see one and the unseen murderer dispatch his ( or her . ) victim with an oversized and novelty safety pin . it be an odd choice to be sure and the kind of thing that deserve an explanation . naturally and the movie never even attempt to clarify where the killer acquire such a thing . a the title suggest and an aerobics gym be under siege by a mad killer and everyone be a suspect . in fact and the movie give so few clue a to the identity of the killer and just about everyone in the movie be a potential murderer until they get kill . and since just about everyone but the killer wind up dead and it really just process of elimination . oddly and while the entire name cast be kill off and the aerobics class continue in earnest . in fact and nothing be capable of stop the dancing . while three men be murder in the next room and the workout go on . death isn not even a factor while one character dy and but be still see prominently in the late workout session . director david prior know what he be do when name the movie killer workout and not logical workout . cop chase and explosive tanning bed and and hundred of shot of woman expose flesh be throw in for good measure . much like the woman catch in the tanning bed and i felt very uncomfortable by the end of killer workout . finally and thankfully and the end flash on the screen . what happen next . you get it and shot of the woman work out . not even the end of the movie can stop them .