One new exercise is added to each body part’s routine to give you more ways to work your muscles and help them grow in all directions. You’ll do two exercises for 3–4 sets for each muscle group. Large body parts like the chest, back, shoulders, quads, and hamstrings will get four sets, while smaller body parts will get three (biceps, triceps, abs, calves). Again, working in the 8–15-rep range, this adds up to 16 sets for large body parts and 12 sets for smaller ones, which is a big increase in volume from Week 1.