Arnold’s arm training can be broken down and discussed in terms of macro principles (sets, reps, and any other non-exercise-specific practices) and micro principles (specific exercise technique).
If you haven’t already, check out our piece on Arnold’s arm training philosophy.
As you can imagine, the Oak was extremely particular about how he performed each exercise in his routine. Strict form was a high priority. Hence, the following principles that applied to his biceps and triceps exercises.