An article found on Bodybuilding.com showing how Arnold really trained at the beginning of his bodybuilding career.
"How to Gain Weight, Train Hard, Get Massive"
by Arnold Schwarzenegger
as told to Gene Mozee (Ironman, March 1994)...
"Heavy movements stimulate the deep-lying muscle fibers that lighter movements never reach. The objective is to use fewer exercises, employ heavier poundages and train your whole body in one workout. I gained most of my weight and massiveness on a program of 10 exercises that I performed three times a week. After I reached a satisfactory bodyweight, I changed over to the more advanced split system and began training six days a week."
"If you need to put on 20 pounds or more, the following program is for you."
Squats 5 x 8,8,6,6,6
Bench Presses 5 x 8,8,6,6,6
Incline Presses 5 x 8,8,6,6,6
Wide-Grip Chins 5 x 8-10
Bent-Over Rows 5 x 8,8,6,6,6
Behind-the-Neck-Presses 5 x 8,8,6,6,6
Barbell Curls 5 x 8,8,6,6,6
Lying Triceps Extensions 5 x 8,8,6,6,6
Deadlifts 5 x 3-5 (building up to one max set)
Machine Calf Raises 5 x 10-15