What is a good fat-free mass? Understanding Fat-Free Mass Index (FFMI)
                                
                                
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                                    4 min read                                
                            
                                According to a study published in *PMC*, Fat-Free Mass Index (FFMI) is often a better indicator of health and body composition than Body Mass Index (BMI). A good fat-free mass is not a single number but a healthy range that depends on your sex, height, and fitness goals, with FFMI providing a more nuanced picture than body weight alone.