Natural Muscular Potential
Predict your maximum drug-free muscle size (FFMI) based on your wrist and ankle bone structure.
Example: 5'10" is 70 inches.
Measure the smallest part of your wrist, below the bone.
Measure the smallest part of your ankle, above the bone.
🧬 Genetic Limit Prediction
Maximum Measurements
Casey Butt's Model
Developed by analyzing elite drug-free bodybuilders (pre-steroid era). It uses bone structure to determine the maximum amount of muscle a frame can support.FFMI (Fat Free Mass Index)
- 19-20: Average Male
- 21-22: Well Trained
- 25: Genetic Ceiling (Natural)
- >26: Highly likely to be enhanced
Results Natural Muscular Potential
This is a powerful online tool designed to help you calculate your Performance metrics instantly. We are dedicated to providing accurate and easy-to-use financial and life tools.
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