Is it true that every time you hit your head or brush your hair you lose brain cells?

If so, how many?Is it true that every time you hit your head or brush your hair you lose brain cells?
it is true when you hit your head. but i dont think thats the case for brushing your hair. you have millions of cells in your body so its hard to count exactly how many but it would be a very little percentage of all your brain cells. and cells are always made too i think as wellIs it true that every time you hit your head or brush your hair you lose brain cells?
not enough to worry about unless you are a boxer or something