Sometimes what you want is to be able to simply do something simple. No overthinking the part, no role-play in your head. Nothing that will constantly challenge your coordination and force you to be mindful of your body every single moment of the workout. This is where this "Wash, Rinse and Repeat" cycle is perfect. You can set it up and let your body do its thing while your mind takes a figurative break for a while. So, choose your level and get ready to rock it.
Extra Credit: 30 seconds rest between sets.