J3 University

Author: John Jewett III

J3 University is an online education and coaching service made for bodybuilding and physique enhancement. Our podcast interviews experts in the field of research and coaching to bridge the gap between science and in the trench experience. Come and empower yourself to a higher level of physique development.
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How Often Should You Change Your Workout Split? | J3U Podcast 217
Episode 217
Sunday, 15 March, 2026

How often should you actually change your workout split — and is switching too soon killing your progress? In this episode, we break down the real science behind exercise rotation vs. repeatability, including what a 2021 study revealed about regional muscle growth and whether variety actually builds more muscle. We cover how your experience level should dictate how often you rotate, which muscle groups genuinely need exercise variety and which don’t, and how to structure your upper/lower split so you’re covering full muscle actions without stacking injury risk over time. If you want more episodes like this — where we translate research into practical coaching decisions — subscribe and follow along each week. 🎟️ Save 20% on ANY J3U Program with code J3UPOD 👉 https://j3u.site All J3U Programs 🏋️‍♀️ Hourglass (Female): https://j3u.site/hourglass 💪 X-Frame (Male & Female): https://j3u.site/xframe 🏆 Olympia Prep: https://j3u.site/olympia 🎓 Courses Level 1 — Foundations of Evidence-Based Bodybuilding → https://j3u.site/level1 Applied Hypertrophy Optimization → https://j3u.site/aho Female Physique Module → https://j3u.site/female 🏋️ Get Coaching From J3U https://j3u.site/coaching 💪 Join the Community 📩 Weekly education emails → https://j3u.site/newsletter 🧠 Coaching forums → https://j3u.site/forum