If the human stomach is relatively the size of our fist doesn't it make sense to not eat more than however big our fist is?
HUMAN HEART IS ABOUT THE SIZE oF OUR FIST NOT HUMAN STOMACH
even if the stomach is the size of your fist, it does not matter because the stomach wall has the elastic property.so it will expand when food goes down via the esophagus up to the stomach orifice
But in general that's not healthy to eat too much.
Our heart is the size of our fist. Just like the first answer said.
Our stomachs are elastic and eating what fits in your fist will leave you hungry but you still cant eat too much