Why do guys have to eat more than girls? Exploring metabolic differences
                                
                                
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                                    4 min read                                
                            
                                On average, a sedentary adult man needs approximately 500 more calories per day than a sedentary adult woman. This significant difference in daily energy needs is a core part of the answer to why do guys have to eat more than girls, primarily driven by fundamental biological distinctions in body composition and metabolism.