I feel it gets grip and core (obliques) more than anything. I guess it depends on your weaknesses as far as where you're going to feel it the most. Grip is a constant issue for me, and I refuse to use straps. I don't even like using mixed grip, and if I do, I have to do an even number of switching, or else I end up with one side having more sets/reps than the other... and that just ruins EVERYTHING.
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