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The prone position, especially when done at a 45-degree angle with a bench, allows for you to hit your back with a variety of exercises without getting up. This chest-supported position also allows for you to load up a bit as you can drive into the bench for leverage. The key, though, with all exercises is that you keep your thoracic spine in some level of extension. You don't want to slouch over the bench.

Try to keep your chest up as though you just heard your name and "won an all-expenses paid vacation" in the same sentence.

Tempo is also key. Don't rush these three exercises. In fact, take your time and experience greater time under tension to truly fatigue the muscle fibers you are trying to work. – Kevin Mullins