Barbell Medicine Podcast Bonus Episode: Dr. Feigenbaum on Volume vs. Intensity, Training Frequency, Peptides, and More!
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Oct 9, 2025 Dr. Jordan Feigenbaum dives into the essentials of training volume, intensity, and their impact on muscle growth. He clarifies muscle memory, revealing that previously trained muscles bounce back faster due to lasting adaptations. The discussion covers the safety and effectiveness of popular peptides, alongside a look at the ‘Murph’ workout's risks and benefits. With tips on managing back pain and options for busy trainees, he also tackles the balance between cardio and muscle building—highlighting realistic training sessions and addressing chronic injuries.
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Program Singles To Improve Max Efforts
- Use singles to practice maximal single-rep performance and to learn how strong you are on a given day.
- Place fatigue singles before, during, or after volume depending on goals and preference.
Evaluate Peptides Like Any Drug
- Treat each peptide individually: ask for human evidence of safety and efficacy before use.
- Avoid self-experimentation with unproven peptides and discuss risks with your doctor.
Frequency Redistributes Volume Effects
- Frequency mainly redistributes weekly volume; total volume largely drives hypertrophy.
- Beyond ~10–15 sets per muscle per session evidence for more single-session volume benefit is weak, so spread volume or increase proximity to failure.