8 sets total. 2 sets wide-grip overhand; 2 sets narrow grip overhand; 2 sets narrow grip underhand (chin-ups, no kip); 2 sets alternating, 2 underhand, 2 overhand. I do 16 per set, and the last set until failure. I've been maxing out the last set at 22-26. When I started these workouts less than 3 months ago, I could only do about 20 pull-ups total over the eight sets!
