Mass-Building Routine 1 Barbell Squat 4 sets, 6-8, 6-8, 8-10, 8-10 reps (Lighten the weight after your first 2 sets.) 2 Leg Press 4 sets, 8-10, 8-10, 10-12, 10-12 reps (Alternate 2 different foot positions.) 3 Dumbbell Walking Lunge 3 sets, 10, 12, 14 steps per side 4 Leg Extensions 3 sets, 10 reps (Do a single dropset on each set.) 5 Romanian Deadlift 3 sets, 8, 10, 12 reps 6 Lying Leg Curls 3 sets, 8, 10, 12 reps 7 Standing Calf Raises 4 sets, 12, 12, 20, 20 reps