Arnold's training schedule is considered high volume by today's standards. He did as many as 26 working sets on large muscle groups such as back, chest, and shoulders. And since he broke down the legs into the quads, hamstrings and calves, he frequently did as many as 61 sets on leg day.
Schwarzenegger said he trains chest and back one day, biceps, triceps, and shoulders another day, and legs the third day, and then repeats. In each gym session he does 30 sets, and gave an example of a chest and back day as five sets of each of the following exercises: Machine bench press x 20 reps.For his chest, Arnold Schwarzenegger's workout plan consisted of: Bench press: 5 sets of 6-10 reps. Cable crossovers: 6 sets of 10-12 reps. Flat bench flyes: 5 sets of 6-10 reps.
He puts in an hour and a half daily, cycling for 45 to 60 minutes and lifting weights for another 30. That's a hell of a daily workout, especially for a 75-year-old, though it's down considerably from his peak bodybuilding days. When he was competing, he would lift weights for five hours a day.