<iframe width="580" height="385" src="https://www.youtube.com/embed/Ng-ChG3prXA?autoplay=1" frameborder="0" allowfullscreen></iframe> <br>From movies to literature, the idea that we only use a small fraction of our brain is everywhere in pop-culture. But, is it true? BBC Reel's Howard Timberlake summons the mental strength to investigate. #bbcreel #bbc #bbcnews <br><a href="https://www.youtube.com/watch?v=Ng-ChG3prXA">source</a>