Brain PowerDiscover how to train your brain and become the best you can be in this empowering and inclusive guide by the nation's favourite doctor, Dr Ranj. Brains don't look like much, do they? A touch of slime here, some squishy grey stuff there. But in fact, your brain is more powerful than any supercomputer, and it is completely fascinating. Have you ever wondered why you're left handed? Or why you have dreams? Or what causes pins and needles? I'll tell you