Dr. Stacy Sims on Whey, Plant, Beef… But What Actually Matters When Building Muscle? @DrStacySims
Dr. Stacy Sims on Whey, Plant, Beef… But What Actually Matters When Building Muscle?  @DrStacySims
Uploaded March 2026 | Updated September 2026, 2 weeks ago
In this conversation, I break down what really matters in the protein argument: amino acid availability, bioavailability, and how different protein powders compare to egg white, the gold standard for protein quality. We talk about why whey isolate ranks higher, why plant proteins require different dosing, and why beef protein hasn’t even been properly rated yet.

We also discus serving sizes, muscle protein synthesis thresholds, and why many people are unintentionally under-dosing their protein. Beyond that, we cover why food should always come first.

If you’re trying to build muscle, support performance, or just make smarter nutrition decisions, this clears up the noise.

Watch the full episode for the complete discussion.

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πŸ‘©β€πŸ”¬ About Me:
I’m Dr. Stacy Sims, exercise physiologist, nutrition scientist, and author of ROAR and Next Level. My mission is simple: stop training women like small men. I help you understand and work with your physiology - for better performance, health, and longevity.

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Dr. Stacy Sims on Whey, Plant, Beef… But What Actually Matters When Building Muscle?

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