Does fat make you sink in water? Debunking the buoyancy myth
                                
                                
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                                    3 min read                                
                            
                                According to Archimedes' principle, an object immersed in a fluid is buoyed up by a force equal to the weight of the fluid it displaces. This fundamental law of physics explains why the composition of your body, including its percentage of fat, is the primary determinant of whether you float or sink.