The Berry Limitless Journal

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Research-backed writing on training, nutrition, recovery and longevity — with the sources shown, so you can check the work.

Nutrition · July 20, 2026

How Much Protein You Actually Need to Keep Muscle While Losing Fat

Losing weight is easy to measure and easy to get wrong. If you are not deliberately protecting muscle while you diet, a meaningful share of what you lose will be the tissue you spent years building. Here is the practical number, why it works, and how to actually hit it.