Guys that build muscle to look like Arnold aren't the guys that powerlift 800-900 lbs over their heads.
Mass does matter, but like any geometry teacher tells you, you can't go on looks.
My friend's dad and brother are both powerhouses when it comes to lifting weight. His father can benchpress 350 pounds and his brother set the state record in deadlifting at his age (I think 15 or 16 at the time). They are both guys who are smaller than me. Society just pushes the image that lean toned abs and pectorals and other muscle definition means that the guy is very strong.
Neutron stars are more massive than our sun, but are smaller. It's just food for thought.
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