a weight lifting exercise machine that uses dumbbell weights for the weight resistance and for incremental weight adjustment . dumbbells are particularly suitable since they are usable both as free weights and as incremental weights for the exercise machine . the machine includes an overall frame that stands on the floor , and at least one vertical guide rail attached to the frame . a dumbbell weight carrier is a assembled to the guide rail . the dumbbell weight carrier has a carriage that engages the guide rail . a dumbbell receptacle is attached to the carriage . the dumbbell receptacle can hold a plurality of dumbbell weights selected according to the overall weight desired by the exercising person . a weight handle is connected to the dumbbell weight carrier . the exercising person engages the weight handle and moves it against the weight resistance of the weight carrier and dumbbell weights loaded thereon .