Check out this routine.

[Aiken_Drum]

I´ve been working out almost for a year and half now with a routine divided in 2 days. So now I´m trying to make a new one divided in four. What do you think about this one? Any ideas about changing or adding exercises, order, number of reps, etc greatly appreciated. I´m trying to bulk up.

Workout 1 - Back

Deadlift x 4 sets
Bent over rows x 4 sets
Chin ups x 4 sets
Barbell shrugs x 4 sets
Biceps x 8 sets various exercises
Too much back if I add Underhand Chin-up? And what´s the difference between Chin-ups and Pull-ups?

Workout 2 - Chest

Flat bench x 4 sets
Incline barbell bench x 4 sets
Cable flys x 4 sets
Triceps x 8 sets various exercises

Workout 3 - Legs

Squat x 4 sets
Stiff leg deads x 4 sets
Leg press x 4 sets
Leg curls x 4
Barbell Step-up x 4

Workout 4 - Shoulders

Military press x 4 sets
Upright rows/Power cleans x 4 sets
Lateral raises x 4 sets
Weighted Incline Twisting Situp x 4 sets
Hanging Hip Raise x 4 sets
Weighted Incline Sit-up x 4 sets (Do I target the entire abs with the 2 above? Is this one necessary?)
Forearms x 8 sets various exercises