The physics joke that broke my brain! Mass isn't the whole story, folks! 100kg of feathers occupies roughly the volume of a small bedroom, requiring massive muscular engagement across your entire body to handle that fluffy monstrosity. Meanwhile, 100kg of steel fits in a tidy compact package, letting you focus all that strength in one controlled lift. The buff-to-skinny transformation isn't about weight—it's about density and volume distribution ! Next time someone asks "which weighs more: 100kg of feathers or 100kg of steel?" just scream "DENSITY MATTERS!" and walk away dramatically.