Double-Split Routines

Workouts reached peak volume in the 1970s when Arnold Schwarzenegger hit most body parts with a 15- to 25-set barrage three times weekly and abs and calves daily. But Arnold didn’t just do half his workload one day and the other half the next, because the resulting sessions would’ve lasted more than four hours. He also went a step further and split each day’s workload, doing half in the morning and the other half in the afternoon or evening. By double-splitting, he moderated th