Effective bodybuilding splits are typically organized around seven primary muscle groups, each requiring specific mechanical tension to grow:
Targeted through core stabilization and trunk flexion to define the midsection. Principles of Muscle Growth (Hypertrophy) Bodybuilding Anatomy
Training must address the front, side, and rear heads separately to achieve "capped" shoulders. and forearms .
Includes the biceps brachii , triceps brachii (the larger part of the arm), and forearms . Bodybuilding Anatomy