A bold new book reveals how we can tap the intelligence that exists beyond our brains-in our bodies, our surroundings, and our relationships.Use your head.That's what we tell ourselves when facing a tricky problem or a difficult project. But a growing body of research indicates that we've got it exactly backwards. What we need to do, says acclaimed science writer Annie Murphy Paul, is think outside the brain. A host of "extra-neural" resources-the feelings and movements of our bodies, the ...