If the conscious mind—the part you consider you—accounts for only a tiny fraction of the brain’s function, what is all the rest doing? This is the question that David Eagleman—renowned neuroscientist and acclaimed author of Sum—answers in a book as accessible and entertaining as it is deeply informed by startling, up-to-the-minute research.

In Incognito, Eagleman plumbs the depths of the subconscious brain to illuminate surprising questions: Why can your foot jump halfway to the brake pedal before you are consciously aware of danger ahead? Why do strippers make more money at certain times of the month, although no one is consciously aware of their fertility level? Is there a true Mel Gibson? What do Odysseus and the subprime mortgage meltdown have in common? How is your brain like a conflicted democracy engaged in civil war? Why are people whose name begins with J more likely to marry other people whose name begins with J? Why is it so difficult to keep a secret? Why did Supreme Court Justice William Douglas deny that he was paralyzed?

This subsurface exploration includes diversions into brain damage, drugs, infidelity, synesthesia, criminal law, the future of artificial intelligence, and visual illusions—all highlighting how our perception of the world is a hidden and awe-inspiring construction of the brain.

Most of us have no idea what’s really going on inside our heads. Yet brain scientists have uncovered details every business leader, parent, and teacher should know—like the need for physical activity to get your brain working its best.

How do we learn? What exactly do sleep and stress do to our brains? Why is multi-tasking a myth? Why is it so easy to forget—and so important to repeat new knowledge? Is it true that men and women have different brains?

In Brain Rules, Dr. John Medina, a molecular biologist, shares his lifelong interest in how the brain sciences might influence the way we teach our children and the way we work. In each chapter, he describes a brain rule—what scientists know for sure about how our brains work—and then offers transformative ideas for our daily lives.

Medina’s fascinating stories and infectious sense of humor breathe life into brain science. You’ll learn why Michael Jordan was no good at baseball. You’ll peer over a surgeon’s shoulder as he proves that most of us have a Jennifer Aniston neuron. You’ll meet a boy who has an amazing memory for music but can’t tie his own shoes.

You will discover:

Every brain is wired differently
Exercise improves cognition
We are designed to never stop learning and exploring
Memories are volatile
Sleep is powerfully linked with the ability to learn
Vision trumps all of the other senses
Stress changes the way we learn

In the end, you’ll understand how your brain really works—and how to get the most out of it.