A fat guy uses 100% of his body just like a sportsman, it's just that the sportsman is more active. So in other words you were wrong and repeating an old fallacy and now attempting to get around it by posting something which DOESN'T support you.<quoted text>
The only nonsense here is what you keep stating that you somehow refuse to understand the obvious, but to each their own.
The 'saying' that we only use ten percent of the mind does not mean that only ten percent of the brain is functioning while the other ninety percent lays like dead waste matter. That isn't what the saying meant. But the fact that people like yourself have taken that saying so literally proves what the saying actually means lol.
Brain scans have shown the entire 'normal' brain is fully 100% active. But. But brain scans have also shown that in the brains of people with great creative thinking, their is factually more activity in their brains than in the brain scan of a person who has less creative thinking.
Maybe you should take a non-negative brain breather and read the following link that better spells out my point.
It's was just another old wives tale, like "law" of gravity, or "missing link". Public latches onto these terms anyway because most of them don't know better. Nothing more complicated than that.