The only good thing about this movie is that IT ENDS! Most TORTURE routines don't have a time set to end, so its nice to know that that you don't have to suffer anymore after a certain point in time.
But is Advisable that you find some other action to engage parallel to watching the movie, to distract you, so that your attention is not soleny focused on the movie so you can manage your threshold of pain. You can, for example, have a friend rip your nails out off your fingers in living flesh, or use cables to connect a car battery into your balls and turn it into maximum gear to deliver the electric charge, or other things of the type that can deliver a level of pain much inferior to the process of watching the movie.
Or you could, you know, just not watch it. Your call...