I am pretty sure we use 10% of our brain the rest is either not usefull or not unlocked.
Brian has $100 and he used it to pay for groceries.
A cat has abour 2% of a humans brian.
a lot
All of it
How much money do mark and brian make?
8-10 glass of water
100000ibs
Because they dont use their energy that much
100% all humans do.
you don't,human only use 10 precent of the brian
how much does Brian O Driscoll get paid a year
because then there would be too much water use.