We Only Use 10% of Our Brains

Neuroimaging has definitively proven that humans use virtually every part of their brain across a typical day, yet the 10% myth persists in self-help books, movies, and teacher training. A 2019 survey found 65% of educators still believe it, despite fMRI studies showing zero silent regions during routine tasks like reading or walking. The myth is older than the average education student’s grandparents, originating from a 1907 misinterpretation of William James’s work. Correcting it saves teachers from wasting 15 hours per year on bogus brain-training exercises, though it ranks behind #1 in harm because it rarely changes classroom practice.