With billions of neurons and trillions of connections between them, the brain is infinitely complex. But one feature of the mind captures our collection attention like no other: dreaming. Dreams are a source of mystery. They have changed the course of individual lives and the world, spurring business deals, inspiring art and scientific breakthroughs, triggering military invasions and mental breakdowns. Yet the source of dreams is not mysterious. They are the product of normal brain electrophysiology and they follow the circadian rhythms, the day-night cycles that govern all life. In this pioneering book, bestselling neurosurgeon Dr Rahul Jandial delves into decades of research into the dreaming brain and shares stories from his own practice to show the extraordinary impact that dreams have on our waking life.