[spigottoday]

That is news to me and interesting. Do you have a citation or link to share?

[srinivgp]

"people only use about 2% of the volume of their house at any given time"

[melagonster]

scientists distinguished function of different regions in our brain, so human doesn't need to use all region is a more obvious idea now.

I can't recommend literature, a probably source is in medical textbook.

[GuB-42]

I thought bullshit too. After all, why would chemical reactions in the brain stop? But after a bit of thinking and Googling, I stumbled upon this

https://www.ucl.ac.uk/news/2020/aug/energy-demands-limit-our...

Not saying that only X% of our brain is being used, but what it essentially says is that our brain is power-limited, and therefore, it has to be selective in which parts to "turn on". It makes a lot of sense, there are few things in life more important than energy and power management, and human brains already need lots of both.

[duskwuff]

We have a word for what happens when people "use 100% of their brain".

We call that an epileptic seizure. :)