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October 6, 2025

020 How to program a muscle specialisation phase

In this episode of Hypertrophy: Past and Present, Jake and Chris use Peary Rader’s leg routine to outline a practical, physiology-led blueprint for muscle specialisation.

Key topics include:

  • Peary Rader’s pre-steroid era leg routine (and the changes we would make today)

  • A framework for designing a muscle specialisation phase for any muscle

  • When to specialise and how to integrate it into your main plan without losing your progress

  • Writing programs using science-based (mechanisms) vs evidence-based (outcomes)