Quad Routines Beginner *Squats 3-4/15, 12, 10, 8 Lunges 3-4/12 Other exercises for beginners: Quad Extensions, Leg Press Intermediate: Mass *Heavy Squats 5-6/15, 10, 8, 6, 6, 6 Leg Press 3-4/12, 10, 8 Quad Extensions 3-4/15-12 Other exercises for mass: Front Squats, Hack Squats, Lunges, Half-squats, Squats can also be done occasionally on a smith machine in order to better isolate them and use heavier weight- but don't ever let them replace regular squats. Intermediate: Definition Squats 2-4/20, 18, 15, 12 *Quad Extensions 4-5/20, 18, 15, 12, 10 Hack Squats or Sissy Squats 1-3/12 or failure Other exercises for definition: Pretty much the same for mass, just use higher reps. Calf Routines Note: For calves, especially when training for mass, I believe that you should include a lot of partials. And if you have a weak point, 21's work great for calves- just do more of the range you are weak in. Beginner Seated Calf Raises 1-2/25 reps Standing Calf Raises 2-3/25 reps Other exercises for beginners: One-legged calf raises (standing or sitting) Intermediate: Mass Seated Calf Raises 4/15 *Standing Calf Raises (as heavy as possible) 4/20, 15, 15, 12 Other Exercises: One-legged calf raises (standing or sitting), Donkey Calf Raises, Leg Press Calf Raises Intermediate: Definition Same for Mass- just use higher reps/less weight and include some One-legged raises to isolate each calf muscle individually. Hamstrings Routines Beginner Stiff-legged Deadlifts 3/12, 10, 8 *Lying Leg Curls 2-3/12, 10, 8 Intermediate: Mass *Stiff-legged Deadlifts 3-4/10, 8, 6, 6 Lying Leg Curls 2-4/10, 8, 8, 6 Intermediate: Definition Lying Leg Curls 3-4/15, 15, 12, 10 Standing Leg Curls 2-4/15, 12, 12, 10 Lower Back Routines Beginner *Deadlifts 2-4/12, 10, 8, 6 Stiff-legged Deadlifts 2-3/12, 10, 8 Intermediate: Mass *Deadlifts 3-5/10, 8, 8, 6, 6 Stiff-legged Deadlifts 2-4/10, 8, 8, 6 Intermediate Definition Good Mornings 3-4/15, 12, 10, 8 Hyperextensions 3-4/20, 15, 12, 10